Full-automatic gas pressure maintaining and leakage detecting method and device for fuel cell vehicle
A fuel cell vehicle, fully automatic technology, used in measuring devices, fluid tightness testing, and machine/structural component testing. The effect of efficiency
Pending Publication Date: 2022-03-04
DONGFENG MOTOR GRP
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Problems solved by technology
[0005] The invention provides a fully automatic pressure-holding and leak-detection method and device for a fuel cell vehicle to solve or partially solve the technical problems of low detection efficiency and prone to misjudgment existing in the current pressure-holding and leak-test method for fuel cell vehicles
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[0048]BACKGROUND In order to make the present invention pertains to the art to more clearly understand the present invention, in conjunction with the following drawings, by way of specific embodiments described in detail embodiments of the aspect of the invention.
[0049] In order to address the current low-leak detection method for packing a fuel cell vehicle presence detection efficiency and prone to misjudgment of technical problems. Gas embodiment of the present invention discloses a fuel cell vehicle automatic packing method and apparatus for leak detection. Line connections for leaks point problem can be fully automated accurate and efficient packing leak.
[0050] For a detailed description and explanation of the present invention, please refer to the following figure 1 , Example discloses a fuel cell vehicle automatic packing gas leak detection device according to the present invention. In the present embodiment, one or some points of the pipe line connected to the fuel c...
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The invention discloses a full-automatic gas pressure maintaining and leakage detecting method and device for a fuel cell vehicle. The device comprises a supercharger, a detecting assembly, a PLC and a filling gun. Wherein the supercharger is controlled by the PLC to carry out stepped supercharging; in each pressurization stage, the pressurizer is used for injecting gas for pressure maintaining into a pipeline of the hydrogen storage system of the fuel cell vehicle to a corresponding preset pressure by combining with the injection gun; the detection assembly is used for detecting temperature values and pressure values of pipeline gas before and after a preset pressure maintaining time period; the PLC is used for determining a first pressure drop value based on the pressure values of the pipeline gas before and after a preset pressure maintaining time period; based on the temperature values of the pipeline gas before and after the preset pressure maintaining time period, a second pressure drop value influenced by the temperature change is determined; and comparing the first pressure drop value with the second pressure drop value to judge whether the fuel cell vehicle reaches a pressure maintaining and leakage detecting qualified standard or not.
Description
Technical field [0001] The present invention relates to the field of new energy vehicle detection, and more particularly to a gas fully automatic pressureover leak detection method and apparatus for fuel cell vehicles. Background technique [0002] With the popularity of new energy vehicles, in which fuel cell vehicles, especially hydrogen fuel cell vehicles, due to their almost zero environmental demand, fuel cell vehicles will be more widely used in new energy vehicles. In the fuel cell vehicle production process, in order to ensure driving safety, the pipeline of the hydrogen storage system of the fuel cell vehicle must be preserved to ensure that the gas is not generated at each connection point of the hydrogen storage system. Leakage. [0003] At present, the pressureover leak detection of fuel cell vehicles is a manual detection of work efficiency, and does not take into account the temperature change in the pipeline in the pipeline during the actual operation. For example,...
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IPC IPC(8): G01M3/28
CPCG01M3/2815
Inventor 吴星成陈明王子剑王波廉思远
Owner DONGFENG MOTOR GRP