Fuel cell multi-specification pressure sensor test tool structure

Abstract

The utility model relates to the field of test equipment, in particular to a test tool structure for a multi-specification pressure sensor of a fuel cell. The device comprises a shell which is hollow, and the peripheral wall of the shell is provided with an air inlet hole, an air outlet hole and multiple groups of test holes with different specifications; and the sensor groups in one-to-one correspondence with the test holes are mounted on the test holes through the pressing plate groups. According to the utility model, the test holes of eight specifications of sensors are integrated, eight groups of sensors can be detected at a time, the problem of measurement accuracy of the pressure sensor in a hydrogen fuel cell engine system is efficiently solved, and the precision performance of the pressure sensor is detected in advance before the pressure sensor is installed in the system. Pressure sensor products of all different manufacturers are combined for simultaneous measurement, so that the development period is effectively shortened, and project nodes are ensured. Sensors with qualified quality and performance can be screened out after being measured by the structure, and the sensors can be installed in a hydrogen fuel cell engine system for use.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment, and in particular to a test fixture structure for multi-specification pressure sensors for fuel cells. Background Technology

[0002] Hydrogen fuel cell engine systems offer advantages such as zero emissions and rapid refueling, effectively solving problems like long charging times and short driving range associated with lithium batteries. They represent a promising new energy vehicle power system. The working principle of a hydrogen fuel cell engine system is to convert chemical energy into electrical energy. This process involves the electrolysis of hydrogen gas fed into the fuel cell system, which then passes through an electrolyte membrane and reacts with an oxidant and air. Precise control of the hydrogen and air pressures is crucial for ensuring the stable performance of the hydrogen fuel cell engine system. Therefore, pressure sensors are needed to monitor the pressure of the gases entering the system. The accuracy of the pressure sensors themselves determines the accuracy of the gas pressure monitoring. A single engine system often employs multiple pressure sensors of various specifications to monitor the hydrogen system, air system, and thermal management system.

[0003] Existing pressure sensor testing fixtures typically install pressure sensors directly into the hydrogen fuel cell engine system to directly monitor the pressure in various parts of the system. This results in an excessive number of sensors in the system, which are directly installed and used, making it impossible to prevent problems beforehand. Utility Model Content

[0004] To address the problems existing in the background technology, a test fixture structure for multi-specification pressure sensors in fuel cells is proposed. By integrating test holes for eight different sensor specifications, eight sets of sensors can be tested simultaneously, effectively solving the problem of measurement accuracy of pressure sensors in hydrogen fuel cell engine systems. By testing the accuracy and performance of pressure sensors before installation into the system, and simultaneously measuring pressure sensor products from various manufacturers, the development cycle is effectively shortened, and project milestones are met. Sensors measured by this structure can be selected based on their quality and performance for use in the hydrogen fuel cell engine system.

[0005] This utility model proposes a test fixture structure for multi-specification pressure sensors for fuel cells, including a housing, which is hollow inside and has an air inlet, an air outlet, and multiple sets of test holes of different specifications on its peripheral wall; the sensor groups corresponding to the test holes are mounted on the test holes by a pressure plate group.

[0006] Preferably, the test holes are processed according to the sensor group to be tested, and a distinguishing number is set on one side.

[0007] Preferably, the air inlet is threaded and connected to a quick-connect fitting with external threads.

[0008] Preferably, the pressure plate assembly includes a pressure plate; multiple sets of test holes include a hole located at the upper end of the housing; the pressure plate is used to mount the corresponding sensor onto the hole via bolts.

[0009] Preferably, the pressure plate assembly includes a second pressure plate; the multiple sets of test holes include a second hole located on the housing and opposite to the air inlet; the second pressure plate is used to mount the corresponding second sensor on the second hole by a second bolt.

[0010] Preferably, the pressure plate assembly includes pressure plate three; multiple sets of test holes include holes three located on both sides of the housing; the pressure plate three is used to mount the corresponding sensor three onto the holes three via bolts three.

[0011] Preferably, the three holes are arranged in six groups, with three groups located on one side of the housing and the other three groups located on the other side of the housing.

[0012] Preferably, six groups of sensors are set in total.

[0013] Preferably, the eight sets of sensors acquire sensor data through a computer, and a hub serves as the connection medium between the sensors and the computer.

[0014] Compared with existing technologies, this invention has the following beneficial technical effects: This patent, through the integration of test holes for eight different sensor specifications, can test eight groups of sensors at once, efficiently solving the problem of accuracy in pressure sensor measurements within hydrogen fuel cell engine systems. By testing the accuracy and performance of pressure sensors before installation into the system, and simultaneously measuring pressure sensor products from various manufacturers, the development cycle is effectively shortened, ensuring project milestones are met. Sensors measured using this structure can be selected based on their quality and performance for use in the hydrogen fuel cell engine system. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the test fixture for multi-specification pressure sensors for fuel cells in this utility model;

[0016] Figure 2 This is a disassembled structural diagram of the multi-specification pressure sensor testing fixture for fuel cells in this utility model.

[0017] Reference numerals: 1. Housing; 2. Quick-connect connector; 3. Test hole; 4. Pressure plate one; 5. Hole one; 6. Bolt one; 7. Pressure plate two; 8. Bolt two; 9. Sensor group; 10. Differentiation number. Detailed Implementation

[0018] like Figures 1-2As shown, the present invention proposes a test fixture structure for a multi-specification pressure sensor for a fuel cell, including a housing 1, which is hollow inside and has an air inlet, an air outlet, and multiple test holes 3 of different specifications on its peripheral wall; sensor groups 9 corresponding to the test holes 3 are mounted on the test holes 3 by a pressure plate group.

[0019] The test hole 3 is machined to correspond to the sensor group 9 under test, and a distinguishing number 10 is set on one side to distinguish sensors of different specifications and avoid incorrect installation. The air inlet is threaded and connects to the quick-connect coupling 2 with external threads for the air source (nitrogen / air) to keep the structure under pressure.

[0020] It should be further explained that the pressure plate assembly includes pressure plate one (4), pressure plate two (7), and pressure plate three. Multiple sets of test holes 3 include hole one (5) located at the upper end of housing 1, hole two located on housing 1 and opposite the air inlet, and holes three located on both sides of housing 1. Pressure plate one (4) mounts the corresponding sensor one onto hole one (5) using bolt one (6). Pressure plate two (7) mounts the corresponding sensor two onto hole two using bolt two (8). Pressure plate three mounts the corresponding sensor three onto hole three using bolt three.

[0021] It should be further explained that there are six sets of holes, three sets are located on one side of housing 1, and the other three sets are located on the other side of housing 1. There are a total of six sets of sensors.

[0022] It should be further explained that the eight sets of sensors collect sensor data (including sensor measurement data, range, and other information) through a computer, and a hub serves as the connection medium between the sensors and the computer.

[0023] This patent, through a test port 3 integrating eight different sensor specifications, can test eight groups of sensors simultaneously. This efficiently solves the accuracy problem of pressure sensor measurements in hydrogen fuel cell engine systems. By testing the accuracy and performance of pressure sensors before installation into the system, and simultaneously measuring pressure sensor products from various manufacturers, the development cycle is effectively shortened, and project milestones are met. Sensors measured using this structure can be selected based on their quality and performance for use in the hydrogen fuel cell engine system.

[0024] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A fuel cell multi-specification pressure sensor test fixture structure, characterized by, It includes a housing (1), which is hollow inside and has an air inlet, an air outlet, and multiple test holes (3) of different specifications on its periphery. The sensor group (9) corresponding to the test hole (3) is installed on the test hole (3) through the pressure plate group.

2. The fuel cell multi-specification pressure sensor test fixture structure of claim 1, wherein, The test hole (3) is processed to correspond to the sensor group (9) to be tested, and a distinguishing number (10) is set on one side.

3. The fuel cell multi-specification pressure sensor test fixture structure of claim 1, wherein, The air inlet is threaded and connected to a quick-connect fitting (2) with external threads.

4. The fuel cell multi-specification pressure sensor test fixture structure of claim 1, wherein, The pressure plate assembly includes a pressure plate (4); multiple test holes (3) include a hole (5) located at the upper end of the housing (1); the pressure plate (4) uses bolts (6) to mount the corresponding sensor on the hole (5).

5. The fuel cell multi-specification pressure sensor test fixture structure according to claim 4, characterized in that, The pressure plate assembly includes pressure plate two (7); multiple sets of test holes (3) include hole two located on the housing (1) and opposite to the air inlet; pressure plate two (7) is used to mount the corresponding sensor two on hole two by bolt two (8).

6. The fuel cell multi-specification pressure sensor test fixture structure of claim 5, wherein, The pressure plate assembly includes pressure plate three; multiple sets of test holes (3) include holes three located on both sides of the housing (1); the pressure plate three installs the corresponding sensor three on the holes three by bolt three.

7. The fuel cell multi-specification pressure sensor test fixture structure of claim 6, wherein The three holes are set in six groups, with three groups located on one side of the housing (1) and the other three groups located on the other side of the housing (1).

8. The fuel cell multi-specification pressure sensor test fixture structure of claim 7, wherein, There are a total of six groups of sensors.

9. The fuel cell multi-specification pressure sensor test fixture structure of claim 8, wherein, Eight sets of sensors collect sensor data through a computer, with a hub serving as the connection medium between the sensors and the computer.

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