Fuel cell testing tool

Abstract

The present invention provides a fuel cell testing tool, comprising a tooling plate, a pipeline assembly and a sealing plate. The tooling plate is used to fix the front end plate of the fuel cell stack. The pipeline assembly is plugged into the tooling plate and is used to pass fluid into the front end plate of the fuel cell stack. The sealing plate is detachably connected to the tooling plate and is used to seal coolant. The pipeline assembly passes through the tooling plate and is detachably connected to the sealing plate. With such an arrangement, insulation, air tightness and durability tests can be performed on the test tool of the present invention without replacing the test tool, and the test steps are simple.

Description

Technical Field

[0001] The invention belongs to the technical field of battery testing, and in particular relates to a fuel cell testing tool. Background Art

[0002] A fuel cell is a chemical device that converts the chemical energy of a fuel directly into electrical energy. It is also called an electrochemical generator. It is the fourth power generation technology after hydropower, thermal power generation and nuclear power generation.

[0003] The front end plate of the fuel cell is an important component of the fuel cell stack, which plays the role of fastening the stack, connecting and sealing. The front end plate of the stack is an aluminum-plastic composite material, the inner cavity of the flow channel is plastic, and the outer layer is aluminum alloy. Its insulation performance, air tightness, and durability directly affect the overall performance of the whole machine. At present, when testing the front end plate of the stack, multiple test fixtures are required to test the insulation, air tightness, and durability of the front end plate in turn. The operation is cumbersome and the consistency is poor. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a fuel cell test fixture on which the insulation, air tightness and durability tests of the front end plate can be performed without replacing the test fixture and the test steps are simple.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] The present invention provides a fuel cell testing tool, comprising:

[0007] A tooling plate, used to fix the front end plate of the fuel cell stack;

[0008] A pipeline assembly, the pipeline assembly is plugged into the tooling plate and is used to pass fluid into the front end plate of the fuel cell stack;

[0009] A sealing plate, which is detachably connected to the tooling plate and is used to seal the coolant;

[0010] The pipeline assembly passes through the tooling plate and is detachably connected to the sealing plate.

[0011] As a preferred embodiment, the pipeline assembly includes an air inlet pipe and an air outlet pipe that are interconnected, the air inlet pipe provides a fluid air inlet channel for the front end plate of the fuel cell stack, and the air outlet pipe provides a fluid air discharge channel for the front end plate of the fuel cell stack.

[0012] As a preferred implementation, the sealing plate is configured as an insulating material.

[0013] As a preferred implementation, the pipeline assembly further includes a four-way valve, and the air inlet pipe and the air outlet pipe are respectively plugged and connected to two valve ports of the four-way valve.

[0014] As a preferred embodiment, the pipeline assembly also includes an air intake branch pipe, which is arranged in pairs, one end of the air intake branch pipe is plugged and connected to the two valve ports of the four-way valve, and one end of the air intake branch pipe away from the four-way valve is connected to the sealing plate.

[0015] As a preferred embodiment, a threaded bushing is provided on the sealing plate, one of the threaded bushing and the air intake branch pipe is provided with an internal thread, and the other is provided with an external thread, and the threaded bushing and the air intake branch pipe are threadedly connected.

[0016] As a preferred embodiment, the tooling board is provided with handles, and the handles are arranged in pairs on both sides of the tooling board.

[0017] As a preferred embodiment, it further comprises a fixing seat, and the fixing seat is detachably connected to the tooling plate.

[0018] As a preferred embodiment, the interior of the air intake branch pipe is configured with insulating material.

[0019] As a preferred implementation, a sealing ring is provided between the threaded bushing and the sealing plate.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The fuel cell testing tool provided by the present invention comprises a tooling plate, a piping assembly and a sealing plate. The tooling plate is used to fix the front end plate of the fuel cell stack. The piping assembly is plugged into the tooling plate for introducing fluid into the front end plate of the fuel cell stack. The sealing plate is detachably connected to the tooling plate for sealing coolant. The piping assembly passes through the tooling plate and is detachably connected to the sealing plate. With such an arrangement, insulation, air tightness and durability tests can be performed on the testing tool of the present invention without replacing the testing tool, and the testing steps are simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0023] Figure 1 This is a planar structural diagram of a test tooling according to an embodiment of the present invention;

[0024] Figure 2 This is an exploded three-dimensional structural diagram of a test tool according to an embodiment of the present invention;

[0025] Figure 3 A cross-sectional view of a fuel cell stack according to an embodiment of the present invention assembled on a test fixture;

[0026] Figure 4 It is a three-dimensional structural diagram of a fuel cell stack assembled on a test fixture according to an embodiment of the present invention.

[0027] in:

[0028] 1- tooling plate; 2- sealing plate; 3- threaded bushing; 4- quick-connect connector; 5- pipeline assembly; 51- air inlet pipe; 52- air outlet pipe; 53- air inlet branch pipe; 54- first four-way valve; 55- second four-way valve; 6- fixed seat; 7- handle;

[0029] 100 - front end plate; 110 - fixing rod; 120 - cooling cavity; 130 - air cavity; 140 - hydrogen cavity. DETAILED DESCRIPTION

[0030] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth in order to fully understand the present invention, and the embodiments described are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the art without making creative work are within the scope of protection of the present invention.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0032] Please also read Figure 1 and Figure 2 An embodiment of the present invention provides a fuel cell test tool, including a tooling plate 1, a pipeline assembly 5 and a sealing plate 2. The tooling plate 1 is used to fix the front end plate 100 of the fuel cell stack. The pipeline assembly 5 is plugged into the tooling plate 1 and is used to pass fluid into the front end plate 100 of the fuel cell stack. The sealing plate 2 is detachably connected to the tooling plate 1 and is used to seal the coolant. The pipeline assembly 5 passes through the tooling plate 1 and is detachably connected to the sealing plate 2. With such a configuration, insulation, airtightness and durability tests can be performed on the test tool of the present invention without replacing the test tool, and the test steps are simple.

[0033] Specifically, the pipeline assembly 5 includes an air inlet pipe 51 and an air outlet pipe 52 which are interconnected. The air inlet pipe 51 provides a fluid air inlet passage for the front end plate 100 of the fuel cell stack, and the air outlet pipe 52 provides a fluid air discharge passage for the front end plate 100 of the fuel cell stack; the pipeline assembly 5 also includes an air inlet branch pipe 53, which is arranged in pairs and is used to promote the circulation and distribution of the fluid medium of the fuel cell; Figure 1 As shown, the present embodiment is provided with three four-way valves. For ease of understanding, the four-way valve located in the center is defined as the first four-way valve 54, and the four-way valves on both sides thereof are the second four-way valves 55. The air inlet pipe 51 and the air outlet pipe 52 are respectively plugged and connected to two opposite valve ports of the first four-way valve 54. The other two valve ports of the first four-way valve 54 are respectively connected to two air inlet branch pipes 53. The second four-way valve 55 is a part of the air inlet branch pipe 53. By controlling the opening and closing of the valve ports, the flow direction of the fluid is changed. One end of the air inlet branch pipe 53 away from the first four-way valve 54 is connected to the sealing plate 2, as shown in FIG. Figure 2 As shown, a threaded bushing 3 is provided on the sealing plate 2, and one of the threaded bushing 3 and the air intake branch pipe 53 is provided with an internal thread, and the other is provided with an external thread. The threaded bushing 3 and the air intake branch pipe 53 are threadedly connected. It can be understood that a sealing ring is provided between the threaded bushing 3 and the sealing plate 2 to seal the coolant and prevent the coolant from leaking out. The air intake method of the air intake pipe 51 and the four-way valve is adopted, and the four-way valve can be opened and closed separately, so as to play the role of single-chamber medium inlet and outlet, prevent fluid from being entangled, and interfere with the accuracy of the single-chamber air tightness and insulation test.

[0034] Preferably, the sealing plate 2 is configured with an insulating material. In the present embodiment, the sealing plate 2 is a plastic part, which plays the role of coolant connection sealing and insulation. Similarly, the interior of the air intake branch pipe 53 is also configured with an insulating material to ensure the insulation state between the coolant and the outer aluminum alloy layer of the front end plate 100.

[0035] Furthermore, a handle 7 is provided on the tooling board 1, and the handles 7 are arranged in pairs on both sides of the tooling board 1 to facilitate user movement; a fixed seat 6 is also provided on the tooling board 1, and the fixed seat 6 is located on the inner side of the handle 7 and is detachably connected to the tooling board 1. The end of the fixed seat 6 away from the tooling board 1 is connected to the workbench for fixing the tooling board 1.

[0036] When the front end plate 100 of the fuel cell stack is fixed to the tooling plate 1, as shown in FIG. Figure 3 and Figure 4 As shown, the front end plate 100 is fixed to the tooling plate 1 by a fixing rod 110, and the air intake branch pipe 53 is used to connect the cooling cavity 120, the air cavity 130 and the hydrogen cavity 140 of the front end plate 100; since the tooling plate 1 is connected to the front end plate 100 of the stack, the coolant is directly connected to the front end plate 100 of the stack, and an avoidance hole needs to be opened on the tooling plate 1, such as Figure 3As shown, the aperture D2>2D1, which is convenient for quick plugging and unplugging of the tube, and also plays an insulating role. When testing the insulation, since the cooling chamber 120 is filled with water, the insulation value between points A and B can be directly measured, that is, the insulation value between the insulating layer and the outer metal grounding of the fuel cell stack in a wet state; when testing the air tightness of the front end plate 100 of the fuel cell stack, the air inlet pipe 51 is inlet, the first four-way valve 54 and the second four-way valve 55 are opened, and the outlet pipe 52 is closed. When the air chamber 130 and the hydrogen chamber 140 are filled with 0.2-0.3 bar compressed air, the pressure is maintained for 3 minutes, and the gas leakage is checked.

[0037] Preferably, the fixing rod 110 is configured as a hydraulically fastened connection mode. Compared with a bolted connection mode, hydraulic fastening facilitates the assembly and disassembly of the front end plate 100 and the tooling plate 1 and plays a role in rapid batch detection.

[0038] When testing the wet insulation between the front end plate 100 of the fuel cell stack and the left and right distribution pipes, after the test tooling of this embodiment is installed on the front end plate 100 of the fuel cell stack, Figure 4 As shown, water is sprayed on the front, left, right and sides of the tooling plate 1 to test the rain environment of the engine in the external space. The water film will pass through the sealing ring and the sealing groove to form a connection with the coolant in the cooling chamber 120, which will affect the insulation of the engine. At this time, the second four-way valve 55 on the rear side of the test tooling can be closed, and water can be injected from the blocked places on the front of the left and right distribution pipes. After the water is filled, the insulation values ​​of points C and D can be tested.

[0039] When testing the durability of the front end plate 100 of the fuel cell stack, air is taken in from the air inlet pipe 51, the first four-way valve 54 and the second four-way valve 55 are opened, and the air outlet pipe 52 is opened, and a durability test without temperature and pressure pulse cycle is performed within a unit time as required.

[0040] In summary, the fuel cell testing tool provided by the present invention has at least the following technical effects:

[0041] The fuel cell test tooling includes a tooling plate 1, a pipeline assembly 5 and a sealing plate 2. The tooling plate 1 is used to fix the front end plate 100 of the fuel cell stack. The pipeline assembly 5 is plugged into the tooling plate 1 and is used to pass fluid into the front end plate 100 of the fuel cell stack. The sealing plate 2 is detachably connected to the tooling plate 1 and is used to seal the coolant. The pipeline assembly 5 passes through the tooling plate 1 and is detachably connected to the sealing plate 2. With such an arrangement, insulation, air tightness and durability tests can be performed on the test tooling of the present invention without replacing the test tooling, and the test steps are simple.

[0042] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Therefore, any modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A fuel cell testing tool, characterized in that: include: A tooling plate (1) used for fixing a front end plate (100) of a fuel cell stack; A pipeline assembly (5), the pipeline assembly (5) being plugged into the tooling plate (1) and used for passing fluid into the front end plate (100) of the fuel cell stack; A sealing plate (2), the sealing plate (2) being detachably connected to the tooling plate (1) and used for sealing the coolant; The pipeline assembly (5) passes through the tooling plate (1) and is detachably connected to the sealing plate (2).

2. The fuel cell testing tool according to claim 1, characterized in that: The pipeline assembly (5) comprises an air inlet pipe (51) and an air outlet pipe (52) which are interconnected, wherein the air inlet pipe (51) provides a fluid air inlet passage for the front end plate (100) of the fuel cell stack, and the air outlet pipe (52) provides a fluid air discharge passage for the front end plate (100) of the fuel cell stack.

3. The fuel cell testing tool according to claim 1, characterized in that: The sealing plate (2) is configured to be an insulating material.

4. The fuel cell testing tool according to claim 2, characterized in that: The pipeline assembly (5) also includes a four-way valve, and the air inlet pipe (51) and the air outlet pipe (52) are respectively plugged and connected to two valve ports of the four-way valve.

5. The fuel cell testing tool according to claim 4, characterized in that: The pipeline assembly (5) also includes an air intake branch pipe (53), which is arranged in pairs, one end of the air intake branch pipe (53) is plugged and connected to the two valve ports of the four-way valve, and the end of the air intake branch pipe (53) away from the four-way valve is connected to the sealing plate (2).

6. The fuel cell testing tool according to claim 5, characterized in that: The sealing plate (2) is provided with a threaded bushing (3), one of the threaded bushing (3) and the air intake branch pipe (53) is provided with an internal thread, and the other is provided with an external thread, and the threaded bushing (3) and the air intake branch pipe (53) are threadedly connected.

7. The fuel cell testing tool according to claim 1, characterized in that: The tooling plate (1) is provided with handles (7), and the handles (7) are arranged in pairs on both sides of the tooling plate (1).

8. The fuel cell testing tool according to claim 1, characterized in that: It also comprises a fixing seat (6), wherein the fixing seat (6) is detachably connected to the tooling plate (1).

9. The fuel cell testing tool according to claim 5, characterized in that: The interior of the air intake branch pipe (53) is configured with an insulating material.

10. The fuel cell testing tool according to claim 6, characterized in that: A sealing ring is provided between the threaded bushing (3) and the sealing plate (2).

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