Device for rapidly detecting air tightness of battery of hydrogen fuel cell electric two-wheeled vehicle

Abstract

The utility model relates to the technical field of air tightness rapid detection devices, in particular to a hydrogen fuel cell electric two-wheeled vehicle battery air tightness rapid detection device. When an air outlet pipe externally connected with fluorine is inserted into a sealing gasket, a sealing gasket hole is opened; an air outlet pipe externally connected with fluorine penetrates through the upper-layer sealing gasket to enter the interface cavity and then penetrates through the lower-layer sealing gasket to enter the cabinet cavity, the two layers of sealing gaskets tightly block the air outlet pipe externally connected with the fluorine, and the situation that the fluorine leaks out of the cabinet cavity and pollutes air is prevented. The change in the cabinet cavity is observed through the cabinet door, if slight explosion occurs and light occurs, it is indicated that hydrogen leaks out of the hydrogen fuel cell to be detected, and if no change exists in the cabinet cavity, it is indicated that no hydrogen leaks out of the hydrogen fuel cell to be detected, and after detection is finished, the hydrogen fuel cell to be detected is detected. Water mist is sprayed into the cabinet cavity to react with fluorine gas in the cabinet cavity, hydrofluoric acid and oxygen are generated, and the hydrofluoric acid is absorbed by the drying agent below the storage rack.

Description

Technical Field

[0001] The utility model relates to the technical field of rapid air tightness detection devices, in particular to a rapid air tightness detection device for a battery of a hydrogen fuel cell electric two-wheeled vehicle. Background Art

[0002] A hydrogen fuel cell is a power generation device that converts the chemical energy of hydrogen and oxygen directly into electrical energy. Its basic principle is the reverse reaction of water electrolysis, where hydrogen and oxygen are supplied to the anode and cathode respectively. After hydrogen diffuses outward through the anode and reacts with the electrolyte, it releases electrons and reaches the cathode through an external load. Hydrogen fuel cells are environmentally friendly. They use electrochemical reactions instead of combustion (gasoline, diesel) or energy storage (battery) - the most typical traditional backup power solutions. Combustion releases pollutants such as COx, NOx, SOx gases and dust. As mentioned above, fuel cells only produce water and heat. If hydrogen is generated by renewable energy (photovoltaic panels, wind power generation, etc.), the entire cycle is a complete process that does not produce harmful emissions. Hydrogen fuel cells run quietly, with a noise level of only about 55dB, equivalent to the level of normal conversation, which makes fuel cells suitable for indoor installation or outdoor places where noise is restricted. The power generation efficiency of hydrogen fuel cells can reach more than 50%, which is determined by the conversion properties of fuel cells, which directly convert chemical energy into electrical energy without the need for intermediate conversion of thermal energy and mechanical energy (generator).

[0003] In the safety assessment of hydrogen fuel cells, air tightness plays a pivotal role and is a core indicator that attracts much attention during the test verification process. Traditional air tightness testing methods include air tightness tester method, bubble method and air pressure method. The air tightness tester method requires professional equipment and is very expensive; the bubble method takes a long time to test and cannot produce results immediately; the test results of the air pressure method are greatly affected by the temperature and humidity of the environment. Utility Model Content

[0004] The main purpose of the utility model is to provide a hydrogen fuel cell electric two-wheeled vehicle battery air tightness rapid detection device to solve the problems proposed in the related art that professional equipment is required, the cost is very high, the detection time is long, the results cannot be obtained immediately, and the device is greatly affected by the temperature and humidity of the environment.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a rapid air tightness detection device for a hydrogen fuel cell electric two-wheeled vehicle battery is provided, comprising a detection cabinet, a fluorine gas interface and a water mist machine are provided on the top of the detection cabinet, the fluorine gas interface is fixedly connected to the detection cabinet, the fluorine gas interface is provided with an interface cavity, the interface cavity runs through the detection cabinet, a sealing gasket is provided in the interface cavity, the sealing gasket is made of high-elastic rubber, the sealing gasket is fixedly connected to the fluorine gas interface, the sealing gasket comprises a sealing gasket body and a sealing gasket hole, the sealing gasket hole is provided in the center of the sealing gasket body and runs through the sealing gasket body, in the absence of external force, the sealing gasket body squeezes the sealing gasket hole to make it disappear, sealing gaskets are provided on the top and bottom of the interface cavity, the sealing gaskets are parallel to each other, an interface cover is provided on the top of the fluorine gas interface, and the interface cover is threadedly connected to the fluorine gas interface.

[0006] Furthermore, the water mist machine is fixedly connected to the detection cabinet, and the water mist machine includes a piston cavity, a piston head is provided in the piston cavity, and the piston head is movably connected to the piston cavity.

[0007] Furthermore, a piston rod is provided at the center of the top of the piston head, and the piston rod is fixedly connected to the piston head. A pressing plate is provided on the top of the piston rod, and the pressing plate is fixedly connected to the piston rod.

[0008] Furthermore, a water mist machine nozzle is provided at the lower end of the water mist machine, the water mist machine nozzle is fixedly connected to the water mist machine, and the water mist machine nozzle is communicated with the piston chamber.

[0009] Furthermore, the water mist machine nozzle is in an inverted cone shape, and an atomizing disk is provided at the bottom end of the water mist machine nozzle. The atomizing disk is fixedly connected to the water mist machine nozzle, and the atomizing disk includes an atomizing disk body and an atomizing hole. The atomizing hole passes through the atomizing disk body and is connected to the water mist machine nozzle.

[0010] Furthermore, a water mist machine cover is provided on the top of the water mist machine, the water mist machine cover is threadedly connected to the water mist machine, and the piston rod passes through the water mist machine cover and is movably connected to the water mist machine cover.

[0011] Furthermore, the detection cabinet is provided with a cabinet cavity, the cabinet cavity is communicated with the interface cavity and the piston cavity, a storage rack is provided inside the detection cabinet, the storage rack is movably connected to the detection cabinet, a storage tray is provided on the upper part of the storage rack, and the storage tray is movably connected to the storage rack.

[0012] Furthermore, the detection cabinet is provided with a cabinet door, the cabinet door is hinged to the detection cabinet, and the cabinet door is made of high-strength transparent acrylic material.

[0013] Compared with the prior art, the utility model has the following beneficial effects: when the outlet pipe of the external fluorine gas is inserted into the sealing gasket, the hole of the sealing gasket will be opened, the outlet pipe of the external fluorine gas passes through the upper sealing gasket into the interface cavity and then passes through the lower sealing gasket into the cabinet cavity, and the two layers of sealing gaskets tightly seal the outlet pipe of the external fluorine gas to prevent the fluorine gas from leaking out of the cabinet cavity and polluting the air. After dimming the surrounding lights, add a proper amount of fluorine gas to the cabinet cavity to prevent hydrogen leakage from violently reacting with fluorine gas under strong light, and observe the changes in the cabinet cavity through the cabinet door. If there is a slight explosion accompanied by bright light, it means that the hydrogen fuel cell to be tested has hydrogen leakage. If there is no change in the cabinet cavity, it means that the hydrogen fuel cell to be tested has hydrogen leakage. There is no hydrogen leakage from the pool. After the inspection, unscrew the water mist machine cover, hold the pressing piece and pull out the piston head, add an appropriate amount of pure water into the piston cavity, and the pure water flows from the piston cavity into the water mist machine nozzle and enters the atomization hole. Under the joint action of the surface tension of water and atmospheric pressure, the pure water stays inside the water mist machine and will not flow out from the atomization hole. Insert the piston head into the piston cavity, press the pressing piece and press the piston rod downward. The piston rod pushes the piston head downward to squeeze the pure water in the water mist machine. Under the pressure of the piston head, the pure water is sprayed into the cabinet cavity from the atomization hole in the form of mist, and reacts with the fluorine gas in the cabinet cavity to generate hydrofluoric acid and oxygen. The hydrofluoric acid is absorbed by the desiccant under the shelf and will not flow everywhere. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an overall schematic diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the detection cabinet of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the fluorine gas interface of the utility model;

[0017] Figure 4 This is a schematic diagram of the sealing gasket structure of the utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the water mist machine of the utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the atomizing disk of the utility model.

[0020] Illustration Description:

[0021] 1. Inspection cabinet; 101. Cabinet cavity; 102. Cabinet door; 103. Storage tray; 104. Storage rack;

[0022] 2. fluorine gas interface; 201. interface cover; 202. sealing gasket; 203. interface cavity; 2021. sealing gasket body; 2022. sealing gasket hole;

[0023] 3. Water mist machine; 301. Pressing piece; 302. Piston rod; 303. Water mist machine cover; 304. Piston chamber; 305. Piston head; 306. Water mist machine nozzle; 307. Atomizing disk; 3071. Atomizing disk body; 3072. Atomizing hole. DETAILED DESCRIPTION

[0024] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0025] See also Figures 1 to 6 , This embodiment provides a hydrogen fuel cell electric two-wheeled vehicle battery air tightness rapid detection device, including a detection cabinet 1, a fluorine gas interface 2 and a water mist machine 3 are arranged on the top of the detection cabinet 1, the fluorine gas interface 2 is fixedly connected to the detection cabinet 1, the fluorine gas interface 2 is provided with an interface cavity 203, an external fluorine gas pipe enters the detection cabinet 1 from the interface cavity 203 and sprays fluorine gas into the detection cabinet 1, the interface cavity 203 runs through the detection cabinet 1, a sealing gasket 202 is arranged in the interface cavity 203, the sealing gasket 202 is made of high elastic rubber, when the external fluorine gas pipe is inserted into the sealing gasket hole 2022, the sealing gasket 202 tightly wraps the external fluorine gas pipe to prevent fluorine gas leakage and pollution, the sealing gasket 202 is fixedly connected to the fluorine gas interface 2 and will not be The trachea is brought out of the interface cavity 203 and loses its sealing effect. The sealing gasket 202 includes a sealing gasket body 2021 and a sealing gasket hole 2022. The sealing gasket hole 2022 is arranged in the center of the sealing gasket body 2021 and penetrates the sealing gasket body 2021. Without external force, the sealing gasket body 2021 squeezes the sealing gasket hole 2022 to make it disappear. Any diameter of the external fluorine gas pipe can be sealed by the sealing gasket body 2021. Sealing gaskets 202 are arranged on the top and bottom of the interface cavity 203. The sealing gaskets 202 are parallel to each other. The double-layer sealing gasket 202 strengthens the sealing of the fluorine gas interface 2. An interface cover 201 is arranged on the top of the fluorine gas interface 2. The interface cover 201 is threadedly connected to the fluorine gas interface 2 to facilitate the opening and closing of the interface cover 201.

[0026] The water mist machine 3 is fixedly connected to the detection cabinet 1. The water mist machine 3 includes a piston chamber 304 for containing pure water. A piston head 305 is provided in the piston chamber 304 for applying pressure to the pure water in the piston chamber 304. The piston head 305 is movably connected to the piston chamber 304.

[0027] A piston rod 302 is provided at the center of the top of the piston head 305, and the piston rod 302 is fixedly connected to the piston head 305. A pressing plate 301 is provided on the top of the piston rod 302, and the pressing plate 301 is fixedly connected to the piston rod 302. Pressing the pressing plate 301 drives the piston head 305 to move through the piston rod 302.

[0028] A water mist machine nozzle 306 is provided at the lower end of the water mist machine 3 , and the water mist machine nozzle 306 is fixedly connected to the water mist machine 3 . The water mist machine nozzle 306 is communicated with the piston chamber 304 , and pure water flows from the piston chamber 304 into the water mist machine nozzle 306 .

[0029] The water mist machine nozzle 306 is in an inverted cone shape. The pure water in the piston chamber 304 reduces its cross-section through the water mist machine nozzle 306, increasing the pressure on the pure water. An atomizing disk 307 is provided at the bottom of the water mist machine nozzle 306. The atomizing disk 307 is fixedly connected to the water mist machine nozzle 306. The atomizing disk 307 includes an atomizing disk body 3071 and an atomizing hole 3072. The atomizing hole 3072 passes through the atomizing disk body 3071 and is connected to the water mist machine nozzle 306.

[0030] A water mist machine cover 303 is provided on the top of the water mist machine 3, and the water mist machine cover 303 is threadedly connected to the water mist machine 3. The piston rod 302 passes through the water mist machine cover 303 and is movably connected to the water mist machine cover 303. After adding pure water, the water mist machine cover 303 is screwed on, and the piston rod 302 can still drive the piston head 305 to move.

[0031] The detection cabinet 1 is provided with a cabinet cavity 101, and the cabinet cavity 101 is connected with the interface cavity 203 and the piston cavity 304. Fluorine gas and water mist can be sprayed into the cabinet cavity 101. A storage rack 104 is provided inside the detection cabinet 1, and a storage tray 103 is placed on the storage rack 104. The storage rack 104 is movably connected to the detection cabinet 1. A storage tray 103 is provided on the upper part of the storage rack 104 for holding the hydrogen fuel cell to be tested, and the storage tray 103 is movably connected to the storage rack 104.

[0032] The testing cabinet 1 is provided with a cabinet door 102 , which is hinged to the testing cabinet 1 . The cabinet door 102 is made of a high-strength transparent acrylic material. When testing the air tightness of the hydrogen fuel cell, the situation inside the testing cabinet 1 can be observed without opening the cabinet door 102 .

[0033] Open the cabinet door 102, take out the storage tray 103, put the hydrogen fuel cell to be tested into the storage tray 103, and then put the storage tray 103 with the hydrogen fuel cell to be tested into the shelf 104 of the cabinet cavity 101, put a proper amount of desiccant under the shelf 104 of the cabinet cavity 101, and the desiccant absorbs the moisture in the cabinet cavity 101 to avoid affecting the detection of hydrogen. Close the cabinet door 102, unscrew the interface cover 201, and insert the outlet pipe of the external fluorine gas into the fluorine gas interface 2. Since the sealing gasket 202 of the fluorine gas interface 2 is made of high elastic rubber, the sealing gasket hole 2022 is in a closed state under normal circumstances. When the outlet pipe of the external fluorine gas is inserted into the sealing gasket 202, the sealing gasket hole 2022 will be opened, and the outlet pipe of the external fluorine gas passes through the upper sealing gasket 202 to enter the interface cavity 203 and then passes through the lower sealing gasket 202 to enter the cabinet cavity 101. The two layers of sealing gaskets 202 tightly seal the outlet pipe of the external fluorine gas to prevent the fluorine gas from leaking out of the cabinet cavity 101 and polluting the air. After dimming the surrounding lights, add a proper amount of fluorine gas to the cabinet cavity 101 to prevent hydrogen leakage from reacting violently with fluorine gas under strong light. Observe the changes in the cabinet cavity 101 through the cabinet door 102. If there is a slight explosion accompanied by bright light, it means that Detect hydrogen leakage in the hydrogen fuel cell. If there is no change in the cabinet cavity 101, it means that there is no hydrogen leakage in the hydrogen fuel cell to be tested. After the test is completed, unscrew the water mist machine cover 303, hold the pressing piece 301 to pull out the piston head 305, add an appropriate amount of pure water into the piston cavity 304, and the pure water flows from the piston cavity 304 into the water mist machine nozzle 306 and enters the atomization hole 3072. Under the combined effect of the surface tension of the water and the atmospheric pressure, the pure water stays inside the water mist machine 3 and does not flow out from the atomization hole 3072. Insert the piston head 305 into the piston cavity 304, press the pressing piece 301 to press the piston rod 302 downward, and the piston rod 30 2 Push the piston head 305 downward to squeeze the pure water in the water mist machine 3. Under the pressure of the piston head 305, the pure water is sprayed into the cabinet cavity 101 from the atomization hole 3072 in the form of mist, and reacts with the fluorine gas in the cabinet cavity 101 to generate hydrofluoric acid and oxygen. The hydrofluoric acid is absorbed by the desiccant under the shelf 104 and will not flow everywhere. After the fluorine gas is completely absorbed by the pure water, stop spraying water mist into the cabinet cavity 101, draw out the outlet pipe of the external fluorine gas, screw on the interface cover 201, open the cabinet door 102, take out the hydrogen fuel cell to be tested, clean up the desiccant and residual hydrofluoric acid, and close the cabinet door 102.

[0034] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A hydrogen fuel cell electric two-wheeled vehicle battery air tightness rapid detection device, comprising a detection cabinet (1), wherein the top of the detection cabinet (1) is provided with a fluorine gas interface (2) and a water mist machine (3), characterized in that: The fluorine gas interface (2) is fixedly connected to the detection cabinet (1), the fluorine gas interface (2) is provided with an interface cavity (203), the interface cavity (203) passes through the detection cabinet (1), a sealing gasket (202) is provided in the interface cavity (203), the sealing gasket (202) is made of high elastic rubber, the sealing gasket (202) is fixedly connected to the fluorine gas interface (2), the sealing gasket (202) comprises a sealing gasket body (2021) and a sealing gasket hole (2022), the The sealing gasket hole (2022) is arranged at the center of the sealing gasket body (2021) and penetrates the sealing gasket body (2021); in the absence of external force, the sealing gasket body (2021) squeezes the sealing gasket hole (2022) to make it disappear; sealing gaskets (202) are arranged at the top and bottom of the interface cavity (203); the sealing gaskets (202) are parallel to each other; an interface cover (201) is arranged at the top of the fluorine gas interface (2); and the interface cover (201) is threadedly connected to the fluorine gas interface (2).

2. A hydrogen fuel cell electric two-wheeled vehicle battery air tightness rapid detection device according to claim 1, characterized in that: The water mist machine (3) is fixedly connected to the detection cabinet (1), and the water mist machine (3) comprises a piston chamber (304), a piston head (305) is arranged in the piston chamber (304), and the piston head (305) is movably connected to the piston chamber (304).

3. A hydrogen fuel cell electric two-wheeled vehicle battery air tightness rapid detection device according to claim 2, characterized in that: A piston rod (302) is provided at the center of the top of the piston head (305), and the piston rod (302) is fixedly connected to the piston head (305). A pressing plate (301) is provided at the top of the piston rod (302), and the pressing plate (301) is fixedly connected to the piston rod (302).

4. A hydrogen fuel cell electric two-wheeled vehicle battery air tightness rapid detection device according to claim 3, characterized in that: A water mist machine nozzle (306) is provided at the lower end of the water mist machine (3); the water mist machine nozzle (306) is fixedly connected to the water mist machine (3); and the water mist machine nozzle (306) is in communication with the piston chamber (304).

5. A hydrogen fuel cell electric two-wheeled vehicle battery air tightness rapid detection device according to claim 4, characterized in that: The water mist machine nozzle (306) is in an inverted cone shape. An atomizing disk (307) is provided at the bottom end of the water mist machine nozzle (306). The atomizing disk (307) is fixedly connected to the water mist machine nozzle (306). The atomizing disk (307) comprises an atomizing disk body (3071) and an atomizing hole (3072). The atomizing hole (3072) passes through the atomizing disk body (3071) and is connected to the water mist machine nozzle (306).

6. A hydrogen fuel cell electric two-wheeled vehicle battery air tightness rapid detection device according to claim 5, characterized in that: A water mist machine cover (303) is provided on the top of the water mist machine (3), the water mist machine cover (303) is threadedly connected to the water mist machine (3), and the piston rod (302) passes through the water mist machine cover (303) and is movably connected to the water mist machine cover (303).

7. A hydrogen fuel cell electric two-wheeled vehicle battery air tightness rapid detection device according to claim 6, characterized in that: The detection cabinet (1) is provided with a cabinet cavity (101), the cabinet cavity (101) is communicated with the interface cavity (203) and the piston cavity (304), a storage rack (104) is provided inside the detection cabinet (1), the storage rack (104) is movably connected to the detection cabinet (1), a storage tray (103) is provided on the upper part of the storage rack (104), and the storage tray (103) is movably connected to the storage rack (104).

8. A hydrogen fuel cell electric two-wheeled vehicle battery air tightness rapid detection device according to claim 7, characterized in that: The detection cabinet (1) is provided with a cabinet door (102), the cabinet door (102) is hingedly connected to the detection cabinet (1), and the cabinet door (102) is made of a high-strength transparent acrylic material.

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