Fuel cell air path test system

Abstract

The utility model discloses a fuel cell air path test system. Comprising a first pressure sensor, a to-be-tested air filter, a second pressure sensor, an inlet pressure regulating valve, a first temperature sensor, a third pressure sensor, a to-be-tested air compressor, a fourth pressure sensor, a second temperature sensor, a to-be-tested intercooler, a fifth pressure sensor, a third temperature sensor and a silencer which are sequentially connected along an air path. According to the utility model, accurate control and measurement can be realized under the conditions of large air flow and small air flow, and the accuracy of the measurement result of the air component is improved; the air path component test is diversified, and the coordination work condition of the fuel cell air system component is better simulated.

Description

TECHNICAL FIELD

[0001] The present application relates to a fuel cell, in particular to a fuel cell air path test system and test method. BACKGROUND

[0002] The fuel cell air subsystem and the components used in the air path are responsible for providing the required air for the fuel cell stack under different operating conditions, and accurately delivering a certain amount of air with appropriate pressure and temperature to the cathode inlet of the stack, so as to realize the stable and comfortable operation of the fuel cell stack. Therefore, the performance of the fuel cell stack is largely determined by the working of the fuel cell air path subsystem.

[0003] The existing patent such as CN110553831A "a fuel cell air compressor test system", this kind of patent through control two kinds of measuring components accurately measure the air flow under the size of air compressor flow, but the test system components can only test the air compressor, the test components are single. CN112751061A "a fuel cell air path test system and method", this patent through electromagnetic valve opening degree change simulates the cathode gas consumption of the stack under different conditions, comprehensively adjusts the air compressor speed and the opening degree of the back pressure valve, realizes the pressure and flow decoupling control of the cathode flow field, but the test system air flow control and intercooler capacity test precision are poor. Practical new type content

[0004] The utility model discloses a fuel cell air path test system and test method, parallelly connecting two flowmeters of different size and flow at the inlet of air compressor and parallelly connecting two pressure regulating valves of different size and caliber at the outlet, realizing the accurate control of air compressor flow pressure ratio, having air filter pressure loss, air compressor pressure ratio-flow data graph, intercooler pressure loss, intercooler heat dissipation capacity and silencer actual sound attenuation effect test, air compressor and intercooler heat dissipation system are independent, simulate the actual matching condition of fuel cell system component heat dissipation, realize the accurate matching of component heat dissipation demand.

[0005] To achieve the above object, the utility model provides the following technical scheme.

[0006] The fuel cell air path test system disclosed by the embodiment of the application comprises a first pressure sensor, a to-be-tested air filter, a second pressure sensor, an inlet pressure regulating valve, a first temperature sensor, a third pressure sensor, a to-be-tested air compressor, a fourth pressure sensor, a second temperature sensor, a to-be-tested intercooler, a fifth pressure sensor, a third temperature sensor and a silencer which are sequentially connected along an air path.

[0007] The second pressure sensor and the inlet pressure regulating valve are connected by two paths, the first path includes a first manual ball valve and a first air flow meter connected between the second pressure sensor and the inlet pressure regulating valve in sequence, and the second path includes a second manual ball valve and a second air flow meter connected between the second pressure sensor and the inlet pressure regulating valve in sequence, wherein the flow of the first path is small, and the flow of the second path is large.

[0008] The third temperature sensor and the muffler are connected by two paths, the first path includes a first outlet pressure regulating valve and a third manual ball valve connected between the third temperature sensor and the muffler in sequence, and the second path includes a second outlet pressure regulating valve and a fourth manual ball valve connected between the third temperature sensor and the muffler in sequence, wherein the flow of the first path is small, and the flow of the second path is large.

[0009] Preferably, in the above-mentioned fuel cell air path test system, further comprising an air compressor cooling loop, including a first water pump, a first liquid flow meter, a seventh pressure sensor, a fifth temperature sensor, an air compressor controller, the air compressor to be tested, a fourth temperature sensor, a sixth pressure sensor, a first radiator, a first water tank, and the first water pump connected in sequence.

[0010] Preferably, in the above-mentioned fuel cell air path test system, the first water tank is provided with a first water supplement port, a first high liquid level switch, a first low liquid level switch, a seventh temperature sensor, a sixth temperature sensor, and a first heater.

[0011] Preferably, in the above-mentioned fuel cell air path test system, further comprising a intercooler cooling loop, including a second water pump, a second liquid flow meter, a ninth temperature sensor, a ninth pressure sensor, an intercooler to be tested, an eighth temperature sensor, an eighth pressure sensor, a second radiator, a second water tank, and the second water pump connected in sequence.

[0012] Preferably, in the above-mentioned fuel cell air path test system, the second water tank is provided with a second water supplement port, a second high liquid level switch, a second low liquid level switch, a tenth temperature sensor, an eleventh temperature sensor, and a second heater.

[0013] Correspondingly, a fuel cell air path test method is also disclosed, and the data collected by the first pressure sensor, the second pressure sensor, and the first / second air flow meter can be used to obtain the flow resistance of the air filter to be tested under different air flow.

[0014] Correspondingly, a fuel cell air path test method is also disclosed, the rotational speed of the air compressor to be tested and the first outlet pressure regulating valve / second outlet pressure regulating valve are controlled, and the data of the first air flow meter / second air flow meter, third pressure sensor, fourth pressure sensor and first temperature sensor can obtain the relationship between the pressure ratio, flow and rotational speed of the air compressor to be tested.

[0015] Correspondingly, a fuel cell air path test method is also disclosed, the data of the fourth pressure sensor, fifth pressure sensor and first air flow meter / second air flow meter can obtain the air flow resistance of the intercooler to be tested under different air flows.

[0016] Correspondingly, a fuel cell air path test method is also disclosed, the data of the second temperature sensor, third temperature sensor, ninth temperature sensor, eighth temperature sensor, ninth pressure sensor and eighth pressure sensor and the liquid flow of the intercooler cooling loop are collected, and the water temperature of the second water tank, the rotational speed of the second water pump and the rotational speed of the second radiator are controlled, so that the heat dissipation power of the intercooler to be tested and the water flow resistance of the intercooler cooling loop can be obtained.

[0017] Compared with the prior art, the present application can accurately control the measurement under large and small air flows, improve the accuracy of the air component measurement result, and better simulate the coordinated working condition of the fuel cell air system component. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor.

[0019] Figure 1 The figure shows the schematic diagram of the fuel cell air path test system in the embodiment of the present application. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0021] In combination withFigure 1 As shown, the fuel cell air path test system 100 includes a first pressure sensor 101, an air filter to be tested 102, a second pressure sensor 103, an inlet pressure regulating valve 104, a first temperature sensor 105, a third pressure sensor 106, an air compressor to be tested 107, a fourth pressure sensor 108, a second temperature sensor 109, an intercooler to be tested 110, a fifth pressure sensor 111, a third temperature sensor 112, and a muffler 113, which are sequentially connected along the air path.

[0022] There are two paths between the second pressure sensor 103 and the inlet pressure regulating valve 104. The first path includes a first manual ball valve 114 and a first air flow meter 115 connected in sequence between the second pressure sensor 103 and the inlet pressure regulating valve 104. The second path includes a second manual ball valve 116 and a second air flow meter 117 connected in sequence between the second pressure sensor 103 and the inlet pressure regulating valve 104. The first path has a small flow rate, while the second path has a large flow rate.

[0023] There are two branches between the third temperature sensor 112 and the muffler 113. The first branch includes a first outlet pressure regulating valve 118 and a third manual ball valve 119 connected in sequence between the third temperature sensor 112 and the muffler 113. The second branch includes a second outlet pressure regulating valve 120 and a fourth manual ball valve 121 connected in sequence between the third temperature sensor 112 and the muffler 113. The flow rate of the first branch is small, and the flow rate of the second branch is large.

[0024] The system also includes an air compressor cooling circuit, which includes a first water pump 122, a first liquid flow meter 123, a seventh pressure sensor 124, a fifth temperature sensor 125, an air compressor controller 126, the air compressor to be tested 107, a fourth temperature sensor 127, a sixth pressure sensor 128, a first radiator 129, a first water tank 130, and the first water pump 122. The first water tank 130 is provided with a first water replenishment port 131, a first high liquid level switch 132, a first low liquid level switch 133, a seventh temperature sensor 134, a sixth temperature sensor 135, and a first heater 136.

[0025] The system further includes an intercooler cooling circuit, comprising a second water pump 137, a second liquid flow meter 138, a ninth temperature sensor 139, a ninth pressure sensor 140, the intercooler to be tested 110, an eighth temperature sensor 141, an eighth pressure sensor 142, a second radiator 143, a second water tank 144, and the second water pump 137. The second water tank 144 is provided with a second water replenishment port 145, a second high liquid level switch 146, a second low liquid level switch 147, a tenth temperature sensor 148, an eleventh temperature sensor 149, and a second heater 150, all of which are connected in a circular manner.

[0026] Correspondingly, a corresponding fuel cell air path test method is also disclosed:

[0027] Collecting the data of the first pressure sensor 101, the second pressure sensor 103 and the first air flow meter 115 / second air flow meter 117 can obtain the flow resistance of the air filter 102 under different air flow.

[0028] Controlling the rotating speed of the air compressor 107 and the first outlet pressure regulating valve 118 / second outlet pressure regulating valve 120 and collecting the data of the first air flow meter 115 / second air flow meter 117, the third pressure sensor 106, the fourth pressure sensor 108 and the first temperature sensor 105 can obtain the relationship between the pressure ratio, flow and rotating speed of the air compressor 107.

[0029] Collecting the data of the fourth pressure sensor 108, the fifth pressure sensor 111 and the first air flow meter 115 / second air flow meter 117 can obtain the air flow resistance of the intercooler 110 under different air flow.

[0030] Collecting the data of the second temperature sensor 109, the third temperature sensor 112, the ninth temperature sensor 139, the eighth temperature sensor 141, the ninth pressure sensor 140 and the eighth pressure sensor 142 and the liquid flow of the intercooler cooling circuit and controlling the water temperature of the second water tank 144, the rotating speed of the second water pump 137 and the rotating speed of the second radiator 143 can obtain the heat dissipation power of the intercooler 110 and the water flow resistance of the intercooler cooling circuit.

[0031] In specific implementation, two flow meters with different flow are connected in parallel at the inlet of the air compressor and two pressure regulating valves with different sizes are connected in parallel at the outlet, so that the flow and pressure ratio of the air compressor can be precisely controlled; the air filter pressure loss, the air compressor pressure ratio-flow data graph, the intercooler pressure loss, the intercooler heat dissipation capacity and the actual sound attenuation effect of the silencer can be tested; the air compressor and the intercooler cooling system are independent, the actual matching condition of the fuel cell system parts heat dissipation is simulated, and the precise matching of the parts heat dissipation demand is realized.

[0032] The air path component test method can precisely control and measure under large air flow and small air flow, improve the accuracy of the air component measurement result, and better simulate the coordinated working condition of the fuel cell air system components.

[0033] It is to be noted that, as used in this document, the term "indicia" is intended to encompass any type of data, information, or other content, whether in the form of text, graphics, images, video, audio, or otherwise. It is to be further noted that, as used in this document, the terms "coupled" and "connected," along with derivatives thereof, can be used to mean one or more of the following: in electrical communication with; physically contacting with; in long-distance communication with; and / or not in direct contact with. It is to be further noted that, as used in this document, the terms "include" and "comprise," along with derivatives thereof, can be used to indicate inclusion of one or more elements or steps; these terms are not intended to, nor do they, imply that any or all functionality can be included with any or all elements or steps; and / or any such elements or steps are each independently repeatable both logically and temporally. In addition, the term "exemplary" is intended to refer to a non-limiting example, embodiment, or aspect. Moreover, the term "in response to" is intended to mean that a particular action is performed in response to one or more events or conditions, but not necessarily directly or immediately in response to the one or more events or conditions.

[0034] The foregoing is merely illustrative of the principles of this application and various modifications can be made by those skilled in the art, without departing from the spirit and scope of the application. Accordingly, the above description is not intended to limit the scope of the application.

Claims

1. A fuel cell air path test system, characterized by, The first pressure sensor, the air filter to be tested, the second pressure sensor, the inlet pressure regulating valve, the first temperature sensor, the third pressure sensor, the air compressor to be tested, the fourth pressure sensor, the second temperature sensor, the intercooler to be tested, the fifth pressure sensor, the third temperature sensor, the muffler are sequentially connected along the air path. Two branches are branched between the second pressure sensor and the inlet pressure regulating valve, the first branch includes a first manual ball valve and a first air flow meter which are sequentially connected between the second pressure sensor and the inlet pressure regulating valve, and the second branch includes a second manual ball valve and a second air flow meter which are sequentially connected between the second pressure sensor and the inlet pressure regulating valve, wherein the flow of the first branch is small, and the flow of the second branch is large. Two branches are branched between the third temperature sensor and the muffler, the first branch includes a first outlet pressure regulating valve and a third manual ball valve which are sequentially connected between the third temperature sensor and the muffler, and the second branch includes a second outlet pressure regulating valve and a fourth manual ball valve which are sequentially connected between the third temperature sensor and the muffler, wherein the flow of the first branch is small, and the flow of the second branch is large.

2. The fuel cell air path test system of claim 1, wherein, The air compressor cooling circuit further includes a first water pump, a first liquid flow meter, a seventh pressure sensor, a fifth temperature sensor, an air compressor controller, the air compressor to be tested, a fourth temperature sensor, a sixth pressure sensor, a first radiator, a first water tank, and the first water pump which are sequentially connected in circulation.

3. The fuel cell air path test system of claim 2, wherein, The first water tank is provided with a first water supplement port, a first high liquid level switch, a first low liquid level switch, a seventh temperature sensor, a sixth temperature sensor, and a first heater.

4. The fuel cell air path test system of claim 1, wherein, The intercooler cooling circuit further includes a second water pump, a second liquid flow meter, a ninth temperature sensor, a ninth pressure sensor, the intercooler to be tested, an eighth temperature sensor, an eighth pressure sensor, a second radiator, a second water tank, and the second water pump which are sequentially connected in circulation.

5. The fuel cell air path test system of claim 4, wherein, The second water tank is provided with a second water supplement port, a second high liquid level switch, a second low liquid level switch, a tenth temperature sensor, an eleventh temperature sensor, and a second heater.

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