KR20180072981A - Fuel efficiency measuring apparatus and controlling method thereof - Google Patents

Abstract

According to an aspect of the disclosed invention, there is provided an apparatus for measuring fuel consumption and a control method thereof. By controlling the reserve hydrogen tank against the fluctuation of the supplied hydrogen pressure when measuring the fuel consumption of the fuel cell vehicle, test interruption due to hydrogen supply failure is prevented and test stability is achieved. The fuel consumption measuring device according to the disclosed example includes at least one hydrogen tank for storing hydrogen delivered to the fuel cell; a reservoir provided separately from the at least one hydrogen tank and storing hydrogen; a pressure sensor for measuring the pressure of hydrogen supplied by the at least one hydrogen tank; a high pressure regulator (HPR) for reducing the pressure of the hydrogen that has passed through the pressure sensor; a pressure regulator valve (PRV) for discharging the hydrogen to be delivered to the fuel cell; and a control unit that determines whether the detected value measured by the pressure sensor is within a preset range and stops the hydrogen supply of the at least one hydrogen tank and supplies the hydrogen in the reserve tank to the fuel cell when the detected value is out of the predetermined range.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a fuel consumption measuring apparatus,

The disclosed invention relates to an apparatus for measuring fuel consumption of a fuel cell vehicle and a control method thereof.

Recently, as environmental problems have become more important globally, various efforts are being made to solve environmental problems both domestically and internationally. Of these, the use of petroleum fuels in transportation vehicles, which have a great impact on environmental pollution, is continuously increasing year by year, and various studies are underway to reduce pollution caused by vehicles.

Particularly, fuel cell vehicles using environmentally friendly hydrogen as fuel are attracting attention as an alternative to solve environmental pollution caused by existing vehicles. A fuel cell vehicle using hydrogen mainly uses a polymer electrolyte fuel cell (PEM fuel cell) using a polymer membrane as an electrolyte.

On the other hand, the fuel cell vehicle includes a fuel cell and a hydrogen tank for a vehicle that supplies hydrogen to the fuel cell. However, the method of measuring the fuel consumption in the fuel cell vehicle does not use the hydrogen of the hydrogen tank for the vehicle but measures the hydrogen supply in the tank provided with the fuel consumption measuring device.

Conventionally, such a fuel consumption measuring apparatus has a problem in that it fails to provide a measure against failing to control the pressure of supplied hydrogen, and thus has a problem in test stability.

According to an aspect of the disclosed invention, there is provided an apparatus for measuring fuel consumption of a fuel cell vehicle, which controls a spare hydrogen tank against variation in supplied hydrogen pressure to prevent a test stop due to a failure in hydrogen supply, And a control method thereof.

According to one aspect of the present invention, there is provided an apparatus for measuring fuel consumption, comprising: at least one hydrogen tank for storing hydrogen to be delivered to a fuel cell; A reservoir provided separately from the at least one hydrogen tank and storing hydrogen; A pressure sensor for measuring the pressure of hydrogen supplied by said at least one hydrogen tank; An HPR (High Pressure Regulator) for reducing the pressure of the hydrogen that has passed through the pressure sensor; A PRV (Pressure Regulator Valve) for discharging the hydrogen to be delivered to the fuel cell; And stopping hydrogen supply to the at least one hydrogen tank when the detection value is out of the preset range, And a control unit for supplying the fuel to the fuel cell.

The controller may control the HPR to reduce the pressure of the hydrogen supplied by the at least one hydrogen tank or the reserve tank to a predetermined pressure.

Further comprising: at least one tank valve for controlling the supply of the hydrogen stored by the at least one hydrogen tank, wherein the control unit turns on the at least one tank valve to switch the hydrogen of the at least one hydrogen tank And can be delivered to the fuel cell.

Further comprising: a tank valve for controlling supply of the hydrogen stored in the reserve tank, wherein the control unit turns off the at least one tank valve that controls the at least one hydrogen tank, and controls the reserve tank The tank valve can be turned on to supply the hydrogen in the reserve tank to the fuel cell.

And a quick connector for transferring the hydrogen decompressed in the HPR to the fuel cell.

The control unit may measure the fuel efficiency of the fuel cell by supplying hydrogen stored in the reserve tank to the fuel cell when the detected value is out of the predetermined range.

The control unit may determine a hydrogen tank to supply the hydrogen among the plurality of hydrogen tanks based on the fuel consumption mode of the vehicle including the fuel cell when the plurality of hydrogen tanks are provided.

According to another aspect of the present invention, there is provided a fuel consumption measuring apparatus including at least one hydrogen tank and a reserve tank provided outside the fuel cell vehicle, wherein the hydrogen pressure supplied from the at least one hydrogen tank Measuring; Determining whether the measured detection value is within a preset range and stopping the hydrogen supply of the at least one hydrogen tank and controlling the hydrogen supply to the spare tank if the detected value is out of the predetermined range An HPR (High Pressure Regulator) which reduces the pressure of hydrogen supplied from the at least one hydrogen tank or the reserve tank; And a PRV (Pressure Regulator Valve) for discharging the supplied hydrogen.

Further comprising: at least one tank valve for controlling supply of the hydrogen stored by the at least one hydrogen tank, wherein the controlling comprises turning on the at least one tank valve to switch the hydrogen of the at least one hydrogen tank To the fuel cell vehicle.

Further comprising: a tank valve for controlling supply of the hydrogen stored in the reserve tank, wherein the controlling is to turn off the at least one tank valve that controls the at least one hydrogen tank, And turning on the tank valve to supply hydrogen of the reserve tank to the fuel transitional vehicle.

And supplying hydrogen stored in the reserve tank and measuring the fuel consumption of the fuel cell vehicle.

And determining a hydrogen tank to supply the hydrogen among the plurality of hydrogen tanks based on the fuel consumption mode of the fuel cell vehicle when the plurality of hydrogen tanks are provided.

Determining whether the measured value is within a predetermined range and measuring the fuel consumption of the fuel cell vehicle by supplying hydrogen stored in the at least one hydrogen tank if the detected value is within the predetermined range .

According to the disclosed fuel consumption measuring device and its control method, when the fuel consumption of a fuel cell vehicle is measured, a spare hydrogen tank is prepared in response to fluctuations in supplied hydrogen pressure, thereby preventing test interruption due to hydrogen supply failure and ensuring test stability .

1 is a view for explaining a power generation principle of a fuel cell.
2 is a block diagram for explaining hardware of a fuel consumption measuring device used in a conventional fuel cell vehicle.
3 is a flowchart for explaining a case where a test failure may occur.
FIG. 4 is a control block diagram of the fuel consumption measuring apparatus according to an embodiment of the present invention; FIG.
FIG. 5 is a block diagram for explaining a fuel consumption measuring apparatus according to an example in hardware.
6 is a flowchart for explaining a procedure in which the fuel consumption measuring apparatus operates in response to a test failure according to an example.
FIG. 7 is a diagram for specifically explaining an operation according to an example disclosed.

Like reference numerals refer to like elements throughout the specification. The present specification does not describe all elements of the embodiments, and redundant description between general contents or embodiments in the technical field of the present invention will be omitted. The term 'part, module, member, or block' used in the specification may be embodied in software or hardware, and a plurality of 'part, module, member, and block' may be embodied as one component, It is also possible that a single 'part, module, member, block' includes a plurality of components.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only the case directly connected but also the case where the connection is indirectly connected, and the indirect connection includes connection through the wireless communication network do.

Also, when an element is referred to as "comprising ", it means that it can include other elements as well, without departing from the other elements unless specifically stated otherwise.

The terms first, second, etc. are used to distinguish one element from another, and the elements are not limited by the above-mentioned terms.

The singular forms " a " include plural referents unless the context clearly dictates otherwise.

In each step, the identification code is used for convenience of explanation, and the identification code does not describe the order of the steps, and each step may be performed differently from the stated order unless clearly specified in the context. have.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

1 is a view for explaining a power generation principle of a fuel cell.

Referring to FIG. 1, the fuel cell 10 includes a fuel electrode 11 for containing hydrogen as fuel, an air electrode 15 to which air is specifically transferred, and an electrolyte layer 13.

Specifically, the fuel electrode 11 corresponds to the positive electrode (+) of the battery, and separates the supplied hydrogen into hydrogen ions and electrons.

The separated hydrogen ions move to the air electrode 15 through the electrolyte layer 13, and the electrons move to the air electrode 15 after passing through the external circuit. When the fuel cell is used in a vehicle, the electrons are transmitted to an electric motor that provides driving force to the fuel cell vehicle.

The air electrode 15 corresponds to a cathode, and oxygen ions and hydrogen ions meet to form a reaction product, that is, water.

As a result, the fuel cell 10 combines hydrogen and oxygen to generate electricity, water, and heat.

The fuel cell 10 is divided according to an electrolyte contained in the electrolyte layer 13. [

For example, a fuel cell vehicle mainly uses a polymer electrolyte fuel cell (PEM fuel cell). The polymer electrolyte type uses an ion exchange membrane as an electrolyte and has an operating temperature of about 80 ° C. and an efficiency of 75%.

The fuel cell vehicle uses a fuel cell stack (10a in FIG. 2) in which several tens or hundreds of cells are stacked in series in order to obtain a desired electric output. This fuel cell stack 10a receives hydrogen from the hydrogen tank (63 in Fig. 2) provided in the vehicle and generates electricity.

Hereinafter, the fuel consumption measurement test apparatus of the fuel cell stack 10a included in the fuel cell vehicle will be described.

2 is a block diagram for explaining hardware of a fuel consumption measuring device used in a conventional fuel cell vehicle.

2, the conventional fuel consumption measuring apparatus includes a first hydrogen tank 61 and a second hydrogen tank 62, which supply hydrogen to the fuel cell stack 10a of the vehicle, and hydrogen tanks 61 and 62 Tank pressure sensors 41 and 42 for measuring the pressure of the tank, a first HPR (High Pressure Regulator) 121 for regulating the pressure of supplied hydrogen, and a second HPR 122, solenoid valves 86, 87 for stopping the supply of hydrogen as the HPR 121 and 122 fail to regulate the pressure of hydrogen, HPR pressure sensors 50 for measuring the downstream pressure of the HPR 121, 122, A PRV (Pressure Regulator Valve) 90 for discharging hydrogen, a third HPR 124 for regulating the pressure of hydrogen supplied to the fuel cell stack 10a, and a Quick Connector (Quick Connector) 134).

Specifically, the first hydrogen tank 61 supplies hydrogen from the outside of the fuel cell vehicle. The fuel efficiency measurement of the fuel cell vehicle does not use the vehicle hydrogen tank 63 provided in the vehicle.

The second hydrogen tank 62 stores hydrogen to be supplied to the vehicle when the hydrogen supply of the first hydrogen tank 61 is stopped in accordance with the fuel consumption mode of the vehicle. That is, when the tank valve 81 for regulating the supply of hydrogen in the first hydrogen tank 61 is turned off, the tank valve 82 of the second hydrogen tank 62 is turned on and the second hydrogen tank 62 Supplies hydrogen to the fuel cell stack 10a.

The tank pressure sensors 41 and 42 measure the pressures of the hydrogen gas supplied from the hydrogen tanks 61 and 62, respectively.

Based on the pressures measured at the tank pressure sensors 41, 42, the HPR 121, 122 maintains the pressure of the hydrogen constant. Specifically, the first HPR 121 regulates the pressure of hydrogen supplied from the first hydrogen tank 61 and the second HPR 122 regulates the pressure of hydrogen supplied from the second hydrogen tank 61.

The third HPR 124 also regulates the pressure of the hydrogen to a constant level and transfers the hydrogen gas having a constant pressure to the fuel cell stack 10a.

The pressure of hydrogen regulated by each of the HPRs 121 and 122 connected to the respective hydrogen tanks 61 and 62 slightly varies. As an example, the pressure at the rear end of the first HPR may be 17.2 bar and the pressure at the rear end of the second HPR may be 17.5 bar. Even if the hydrogen supply of the first hydrogen tank 61 is interrupted and the tank valve 82 of the second hydrogen tank 62 is turned on, the third HPR 124 is supplied with the pressure of the hydrogen supplied to the fuel cell stack 10a Is maintained constant at 17.0 bar.

The solenoid valves 86 and 87 are provided in such a manner that the HPRs 121 and 122 which regulate the pressure of the hydrogen supplied by the hydrogen tanks 61 and 62 fail to control the pressure or the solenoid valves 86 and 87 of the hydrogen tanks 61 and 62 Means an electrical switch that is turned on or off at the time of switching.

For example, if the first HPR 121 fails to regulate the pressure of hydrogen after the hydrogen is supplied in the first hydrogen tank 61, the solenoid valve 86 may be turned off.

A pressure sensor 50 is provided at the confluence point of the hydrogen supplied from the first hydrogen tank 61 and the second hydrogen tank 62 for the final pressure control. That is, the HPR pressure sensor 50 can measure the pressure of hydrogen supplied to the third HPR 124. [

On the other hand, the HPR used in a general fuel measurement device only reduces the pressure and does not raise the pressure. If the pressure supplied from each of the hydrogen tanks 61 and 62, that is, the pressure at the front end of the third HPR 124, does not exceed the preset value, a test failure occurs.

In this case, the test is terminated. A detailed description related to the test failure will be described later with reference to FIG.

The quick connector 134 is a device for connecting the fuel cell vehicle and the fuel consumption measuring device to a structure for fast movement of the hydrogen gas.

The valve 89 shown in FIG. 2 may be a solenoid valve, which is electrically operated and turned on or off by a change in the electrical switch. The solenoid valve 89 serves to prevent the discharge of the discharged hydrogen.

3 is a flowchart for explaining a case where a test failure may occur.

Referring to FIG. 3, hydrogen tanks 61 and 62 for supplying hydrogen are determined (200).

2, the fuel consumption measuring device used in the fuel cell vehicle can select a hydrogen tank to supply according to the fuel consumption mode of the vehicle.

Then, based on the selected hydrogen tank, the tank valves 81 and 82 are turned on and hydrogen is supplied (210).

If the first hydrogen tank 61 is selected to supply hydrogen, the tank valve 81 connected to the first hydrogen tank 61 is turned on.

The HPR pressure sensor 50 detects the pressure of supplied hydrogen (220).

The fuel consumption measuring device compares the detected value detected by the HPR pressure sensor 50 with the set reference value (230).

Here, the setting reference value is set based on the decompression capability of the third HPR 124. [ That is, the setting reference value means a maximum limit value that the third HPR 124 can accommodate.

As a result of comparison, if the detected value of the HPR pressure sensor 50 exceeds the set reference value, the fuel consumption measuring apparatus discharges hydrogen through the PRV 90 (270).

When the detected value of the HPR pressure sensor 50 is lower than the set reference value, the fuel consumption measuring device compares the detected value of the HPR pressure sensor 50 with the set pressure of the third HPR 124 (240).

Here, the set pressure refers to the pressure set by the user of the fuel consumption measuring device so that the third HPR 124 regulates the pressure. For example, if the user sets the hydrogen pressure on the fuel cell vehicle to 17.0 bar, the set pressure is 17.0 bar.

As a result of the comparison, if the detection value of the HPR pressure sensor 50 exceeds the set pressure, the fuel consumption measuring apparatus operates normally (250).

That is, when the third HPR 124 is supplied with hydrogen that is lower than the acceptable pressure and higher than the set pressure, the pressure of the hydrogen is lowered to the set pressure, and the pressure-regulated hydrogen is supplied to the fuel cell stack 10a Supply.

If the detected value of the HPR pressure sensor 50 is lower than the set pressure, a test failure occurs (260).

As described above, since the third HPR 124 is only capable of reducing pressure and can not raise the supplied pressure, the fuel consumption measuring device can not be supplied with hydrogen at the set pressure required for the test.

When a test failure occurs, the fuel efficiency measurement can not measure the fuel efficiency properly, and the experiment must be carried out again, so that the efficiency of the measurement is deteriorated.

Hereinafter, a fuel consumption measuring apparatus and a control method thereof for solving the above-described problems will be described in detail.

FIG. 4 is a control block diagram of the fuel consumption measuring apparatus according to an embodiment of the present invention; FIG.

4, the fuel consumption measuring apparatus 1 includes an input unit 20 receiving a user's input, a sensor unit 30 measuring the pressure of supplied hydrogen, a hydrogen tank 60 storing hydrogen, A reservoir tank 80 for regulating the supply of hydrogen in each tank, a PRV 90 for discharging hydrogen, an HPR 120 for regulating the pressure of supplied hydrogen, An output unit 110 for outputting a fuel consumption result measured according to the operation of the fuel cell stack 10a, and a control unit 100 for controlling each of the above-described configurations.

Specifically, the input unit 20 is formed on the exterior of the disclosed fuel consumption measuring apparatus 1 and receives an input command from the user. As an example, the input command may include an operation start command of the fuel consumption measuring device 1, an on / off command of the tank valve 80 that controls the hydrogen tank 60 to supply hydrogen, and the like.

Also, the input unit 20 may receive a command for stopping the test and commanding the hydrogen discharge through the input command for controlling the PRV 90.

The input unit 20 includes various buttons such as a button, a switch, a pedal, a keyboard, a mouse, a track-ball, various levers, a handle, a stick, And may include the same hardware device.

In addition, the input unit 20 may include a GUI (Graphical User Interface) such as a touch pad or the like for software input. The touch pad may be implemented as a touch screen panel (TSP) to form a mutual layer structure with the output unit 110 including the display.

The sensor unit (30) detects various results measured by the fuel consumption measuring device (1).

The sensor unit 30 includes a tank pressure sensor 40 for measuring the pressure of hydrogen supplied from the hydrogen tank 60, an HPR pressure sensor 50 for measuring the pressure of hydrogen supplied to the HPR 120, And may include various sensors for measuring the result of the fuel consumption detected in the operation of the battery stack 10a.

A detailed description of the tank pressure sensor 40 and the HPR pressure sensor 50 will be described later with reference to FIG.

The hydrogen tank 60 means a configuration in which the disclosed fuel efficiency measuring apparatus 1 supplies hydrogen to measure the fuel efficiency of the fuel cell stack 10a.

The disclosed fuel efficiency measuring device does not use the hydrogen of the vehicle hydrogen tank (63 of FIG. 5) included in the fuel cell vehicle but has a separate hydrogen tank (60) and measures the fuel consumption while supplying hydrogen.

As shown in FIG. 5, the hydrogen tank 60 may be provided in a single or plural number, and there is no limitation.

The reserve tank (70) is a preliminary tank for supplying hydrogen in preparation for the possibility of a test failure in the disclosed fuel efficiency measuring device (1).

The disclosed fuel consumption measuring device 1 prevents the test failure by supplying hydrogen when the pressure of the supplied hydrogen is lower than the set pressure, based on the detection value measured by the HPR pressure sensor 50 described above.

A detailed description related to the reserve tank 70 will be described later with reference to the following drawings.

The tank valve 80 serves as a switch for regulating the supply of hydrogen to the hydrogen tank 60 and the reserve tank 70 and is turned on or off according to a control command of the controller 100.

The PRV 90 is also a switch operated when it is necessary to discharge hydrogen under the control of the control unit 100. When hydrogen having a pressure exceeding the set reference value of the third HPR 124 is supplied, .

The concrete operation of the tank valve 80 and the PRV 90 will be described later with reference to FIG. 5 and the like.

The output unit 110 not only outputs the fuel consumption result measured by the fuel consumption measuring device 1 but also displays the detected value of the sensor unit 30. [

The output unit 110 may include a hardware device including a display and may be provided with the input unit 20.

The HPR 120 means a pressure holding device that adjusts the pressure of the fluid to the outlet at a constant pressure within a pressure range entering the inlet as described above.

In the disclosed fuel efficiency measuring apparatus 1, at least one HPR 120 is provided. In particular, the hydrogen tank 60 and the reserve tank 70 are provided at the confluence point of hydrogen supplied by the hydrogen tank 60, So that hydrogen at a constant pressure is supplied to the battery stack 10a.

The control unit 100 includes a memory (not shown) for storing data on a program reproducing an algorithm or an algorithm for controlling the operation of various configurations in the fuel consumption measuring device 1, and a fuel consumption measuring device 1) for performing various operations. In this case, the memory and the processor may be implemented as separate chips.

The control unit 100 controls the operation of the reserve tank 70 based on the detection value of the HPR pressure sensor 50 to prepare for the test failure described above with reference to Fig. A detailed description related to the operation of the control unit 100 will be described in detail later with reference to FIG. 6 and the like.

On the other hand, the disclosed fuel efficiency measuring apparatus 1 may include other configurations other than the configuration described with reference to FIG. 4, but is not limited thereto.

FIG. 5 is a block diagram for explaining a fuel consumption measuring apparatus according to an example in hardware.

5, the fuel consumption measuring device 1 according to an embodiment includes a first hydrogen tank 61 and a second hydrogen tank 62 for supplying hydrogen to the fuel cell stack 10a of the vehicle, a hydrogen tank Tank pressure sensors 41 and 42 for measuring the pressure of the tank, a first HPR 121 and a second HPR 121 for regulating the pressure of supplied hydrogen, (Not shown).

The fuel consumption measuring device 1 further includes a reserve tank 70 for supplying hydrogen in preparation for the failure of the test, a third tank valve 83 for controlling the supply of hydrogen stored in the reserve tank 70, A third tank pressure sensor 43 for measuring the pressure of hydrogen supplied by the second tank pressure sensor 43, and a fourth HPR 123 for regulating the pressure of the supplied hydrogen.

The fuel consumption measuring device 1 is provided between the HPR pressure sensor 50 and the HPR 121, 122, 123 for measuring the pressure downstream of the HPR 121, 122, 123 and the pressure sensor 50, And quick solenoid valves 86, 87 and 88 for turning on or off the hydrogen supply under the control of the control unit 100. The quick connectors 131,

The fuel consumption measuring apparatus 10 includes a PRV (Pressure Regulator Valve) 90 for discharging hydrogen, a third HPR 124 for regulating the pressure of hydrogen supplied to the fuel cell stack 10a, and a third HPR 124 And a quick connector 134 for transferring hydrogen to the fuel cell stack 10a.

The description of the configuration that is the same as the configuration described with reference to FIG. 2 will be omitted.

Compared with FIG. 2, the reserve tank 70 is provided separately from the hydrogen tanks 61 and 62 to store hydrogen in preparation for a test failure.

The third tank valve 83 regulates the start of the hydrogen supply of the reserve tank 70 and is turned on or off according to a control command of the control unit 100.

The third tank pressure sensor 43 measures the pressure of hydrogen supplied from the reserve tank 70 and transmits the measured result to the control unit 100. [

The fourth HPR 123 primarily regulates the pressure of the hydrogen supplied from the reserve tank 70 to the fuel cell stack 10a. Here, the pressure of the hydrogen regulated by the fourth HPR 123 may also be different from the pressure that the fuel consumption measuring device 1 ultimately supplies to the fuel cell stack 10a. This difference is regulated in the third HPR 124.

The quick connector 133 transfers the pressure-regulated hydrogen from the fourth HPR 123 to the third HPR 124.

A solenoid valve 88 may be provided between the quick connector 133 and the third HPR 124. The solenoid valve 88 is turned on or off according to an operation command of the control unit 100. That is, if the control unit 100 determines that it is necessary to supply the hydrogen from the reserve tank 70, the solenoid valve 88 is finally operated to transfer the hydrogen in the reserve tank 70 to the fuel cell stack 10a.

On the other hand, the disclosed fuel efficiency measuring device 1 is not necessarily limited to Fig. 5, and various modifications may be made. For example, the hydrogen tank 60 may be provided in a single number, and the quick connectors 131, 132, and 133 may be omitted.

6 is a flowchart for explaining a procedure in which the fuel consumption measuring apparatus operates in response to a test failure according to an example.

Referring to FIG. 6, the control unit 100 determines hydrogen tanks 61 and 62 to supply hydrogen based on the fuel consumption mode (300).

The plurality of hydrogen tanks 61 and 62 according to one example may be provided as shown in FIG. The control unit 100 turns on the tank valve 81 of the first hydrogen tank 61 according to the fuel consumption mode. The control unit 100 turns off the first tank valve 81 and supplies the hydrogen to the second hydrogen tank 62 when hydrogen is supplied from the second hydrogen tank 62 to the first hydrogen tank 61, The connected second tank valve 82 can be turned on to supply hydrogen to the fuel cell stack 10a.

On the other hand, the disclosed fuel efficiency measuring apparatus 1 does not necessarily need to include a plurality of hydrogen tanks 61 and 62, but may include only a single hydrogen tank 60. [ In this case, step 300 may be omitted.

The control unit 100 controls the tank valve 80 to supply hydrogen of the hydrogen tank 60 determined (310).

The control unit 100 receives the detection value of the HPR pressure sensor 50 (320).

As described in FIG. 5, the HPR pressure sensor 50 measures the final hydrogen pressure supplied to the front end of the third HPR 124. The HPR pressure sensor 50 converts the measured pressure value into an electrical signal and transmits the electrical signal to the controller 100.

The control unit 100 determines whether the detected value of the HPR pressure sensor 50 is within a predetermined range. The preset range includes a maximum reference value and a minimum reference value.

First, the control unit 100 determines whether the detected value of the HPR pressure sensor 50 exceeds the maximum reference value.

The maximum reference value means a value obtained by subtracting an arbitrary value from the pressure at which the PRV 90 starts to operate. That is, the maximum reference value is a value smaller than the setting reference value described in FIG.

On the other hand, an arbitrary value may be stored in advance in the control unit 100 or may be set by the user through the input unit 20.

The control unit 100 turns on the tank valve 83 of the reserve tank 70 and supplies the hydrogen to the hydrogen tank 60 when the pressure of the hydrogen supplied to the front end of the third HPR 124 exceeds the maximum reference value. The tank valve 80 is turned off (360).

If the detected value does not exceed the maximum reference value, the control unit 100 determines whether the detected value exceeds the minimum reference value (340).

Here, the minimum reference value means a value greater than the set pressure of the third HPR 124. As described above, the HPR can depressurize the pressure, but can not boost the pressure. Therefore, when the control unit 100 supplies hydrogen pressure of 17.0 bar to the fuel cell vehicle to measure the fuel consumption, the minimum reference value is set to be larger than 17.0 bar.

If the detected value exceeds the minimum reference value, the control unit 100 normally performs fuel consumption measurement (350) and continuously monitors the supplied hydrogen.

However, if the detected value does not exceed the minimum reference value, the control unit 100 turns on the tank valve 83 of the reserve tank 70 and stops the hydrogen supply of the supplied hydrogen tank 60 (360).

FIG. 7 is a diagram for specifically explaining an operation according to an example disclosed.

The direction of the hydrogen supplied by the fuel consumption measuring device 1 according to an example and the measured pressure may be as shown in FIG. For the sake of convenience of explanation, a part of the configuration described in FIG. 5 is omitted.

Specifically, the pressure of hydrogen regulated in the first HPR 121 connected to the first hydrogen tank 61 may be 17.2 bar. The pressure of the regulated hydrogen in the second HPR 122 connected to the second hydrogen tank 62 may be 17.5 bar.

The control unit 100 determines whether the hydrogen tank 60 of one of the first hydrogen tank 61 and the second hydrogen tank 62 supplies hydrogen and controls the tank valves 81 and 82.

For example, the control unit 100 may first control the first hydrogen tank 61 to supply hydrogen. Thereafter, the control unit 100 can switch the first hydrogen tank 61 to supply the hydrogen to the second hydrogen tank 62 based on the fuel consumption mode.

On the other hand, the pressure supplied to the front end of the third HPR 124 due to failure of the first HPR 121 or the second HPR 122 connected to the hydrogen tanks 61 and 62 may vary. In this case, the pressure delivered to the third HPR 124 may exceed the maximum reference value or may be less than the minimum reference value. At this time, the control unit 100 turns off the tank valves 81 and 82 of the supplied hydrogen tanks 61 and 62, turns on the tank valve 83 of the spare tank 70, have.

In this case, as shown in FIG. 7, the pressure of hydrogen finally delivered to the fuel cell stack 10a is 17.0 bar. The third HPR 124 decompresses the hydrogen pressure of 17.3 bar supplied from the reserve tank 70 so that hydrogen of 17.0 bar pressure is supplied to the fuel cell stack 10a, .

Through this, the fuel consumption measuring apparatus 1 disclosed will prevent the test interruption due to the test failure and ensure the test stability.

1: fuel consumption measuring device, 10a: fuel cell stack,
20: input unit, 30: sensor unit,
60, 61, 62,: hydrogen tank 70: reserve tank,
100: control unit, 110: output unit

Claims (13)

At least one hydrogen tank for storing hydrogen delivered to the fuel cell;
A reservoir provided separately from the at least one hydrogen tank and storing hydrogen;
A pressure sensor for measuring the pressure of hydrogen supplied by said at least one hydrogen tank;
An HPR (High Pressure Regulator) for reducing the pressure of the hydrogen that has passed through the pressure sensor;
A PRV (Pressure Regulator Valve) for discharging the hydrogen to be delivered to the fuel cell; And
The control unit determines whether the detection value measured by the pressure sensor is within a preset range and stops the supply of hydrogen to the at least one hydrogen tank if the detected value is out of the predetermined range, And a control unit for supplying the fuel to the battery. The method according to claim 1,
Wherein,
And controls the HPR to reduce the pressure of the hydrogen supplied by the at least one hydrogen tank or the reserve tank to a preset pressure. The method according to claim 1,
Further comprising: at least one tank valve for controlling supply of said hydrogen stored by said at least one hydrogen tank,
Wherein,
The at least one tank valve is turned on to transfer hydrogen of the at least one hydrogen tank to the fuel cell. The method of claim 3,
And a tank valve for controlling supply of the hydrogen stored in the reserve tank,
Wherein,
The at least one tank valve for controlling the at least one hydrogen tank is turned off and the tank valve for controlling the reserve tank is turned on to supply the hydrogen in the reserve tank to the fuel cell. 3. The method of claim 2,
And a quick connector for transmitting the hydrogen decompressed in the HPR to the fuel cell. The method according to claim 1,
Wherein,
And supplies hydrogen stored in the preliminary tank to the fuel cell to measure the fuel efficiency of the fuel cell when the detected value is out of the preset range. The method according to claim 1,
Wherein,
Wherein a hydrogen tank to supply the hydrogen among the plurality of hydrogen tanks is determined based on a fuel consumption mode of the vehicle including the fuel cell when the plurality of hydrogen tanks are provided. In a fuel consumption measuring apparatus including at least one hydrogen tank and a reserve tank provided outside a fuel cell vehicle
Measuring the pressure of the hydrogen supplied by the at least one hydrogen tank;
Determining whether the measured detection value is within a preset range and stopping the hydrogen supply of the at least one hydrogen tank and controlling the hydrogen supply to the spare tank if the detected value is out of the predetermined range ≪ / RTI >
An HPR (High Pressure Regulator) for reducing the pressure of hydrogen supplied from the at least one hydrogen tank or the reserve tank; And
And a PRV (Pressure Regulator Valve) for discharging the supplied hydrogen. 9. The method of claim 8,
Further comprising: at least one tank valve for controlling supply of said hydrogen stored by said at least one hydrogen tank,
The above-
And turning on the at least one tank valve to supply hydrogen of the at least one hydrogen tank to the fuel cell vehicle. 10. The method of claim 9,
And a tank valve for controlling supply of the hydrogen stored in the reserve tank,
The above-
Turning off the at least one tank valve controlling the at least one hydrogen tank and turning on the tank valve for controlling the reserve tank to supply the hydrogen of the reserve tank to the fuel replacing vehicle Control method of fuel consumption measuring device. 9. The method of claim 8,
And supplying hydrogen stored in the reserve tank and measuring the fuel consumption of the fuel cell vehicle. 9. The method of claim 8,
And determining a hydrogen tank for supplying the hydrogen among the plurality of hydrogen tanks based on the fuel consumption mode of the fuel cell vehicle when the plurality of hydrogen tanks are provided. 9. The method of claim 8,
Determining whether the measured detection value is within a predetermined range and measuring the fuel consumption of the fuel cell vehicle by supplying hydrogen stored in the at least one hydrogen tank if the detected value is within the predetermined range And a control method of the fuel consumption measuring device.

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