With the rapid development of technology, the airtightness of the charging gun, as a key equipment for electric vehicle charging, directly affects the safety and efficiency of the charging process.

1、 Testing requirements

1. Pressure parameters: The test pressure set for detection is 20kPa. This pressure value is not arbitrarily determined, but is determined through extensive experimentation and consideration of practical application scenarios. It can effectively detect possible small leakage points without excessive pressure on the charging gun structure. For example, if the pressure is too high, it may cause damage to some of the more precise components inside the charging gun; If the pressure is too low, it is difficult to accurately detect potential leakage hazards.

2. Time setting

Inflate for 10 seconds: During these 10 seconds, gas is filled into the charging gun, gradually increasing the pressure inside the gun to the test pressure of 20kPa. Adequate and stable inflation time can ensure that all parts of the gun are evenly compressed, avoiding misjudgment of leakage caused by uneven local pressure due to rapid inflation.

3. Voltage stabilization time of 10 seconds: The voltage stabilization stage is crucial. During these 10 seconds, maintain a constant pressure to observe if there is any leakage from the charging gun under stable pressure. This process is like giving the charging gun an "adaptation period", allowing its internal pressure to be fully stable, and any small leaks will gradually manifest as a decrease in pressure during this stage.

4. Testing time of 5 seconds: After inflation and stabilization, enter a testing time of 5 seconds. During this brief but critical period, high-precision airtight detection instruments will closely monitor pressure changes, capturing subtle fluctuations in pressure values through advanced sensor technology to determine if leaks have occurred.

5. Bleeding time of 2 seconds: After the test is completed, the 2-second bleeding time can quickly restore the internal pressure of the charging gun to normal, so as to proceed with the next test or put it into use.

Leakage value determination: During the entire testing process, if the leakage value does not exceed 30Pa, the tested charging gun is considered a qualified product. The small leakage value standard of 30Pa reflects the extremely high requirement for the airtightness of the charging gun. Because even extremely subtle leaks can cause impurities such as water vapor and dust to enter the interior of the charging gun during long-term use, thereby affecting its electrical performance and service life, and even potentially causing safety accidents.

2、 The indirect testing method using customized fixtures and testing platforms is currently a more scientific and efficient way to test the airtightness of charging guns.

The function of customized fixtures: Customized fixtures are specially designed and manufactured based on the unique shape and interface structure of the charging gun. It can closely adhere to various detection parts of the charging gun, ensuring a relatively sealed space during the detection process, so that gas can only flow along the preset path, thereby accurately detecting the airtightness of the charging gun.

The function of the testing platform: The testing platform provides a stable operating environment and data collection and analysis functions for the entire testing process. It can control the time and pressure parameters of various stages such as inflation, stabilization, testing, and deflation, and collect real-time pressure data during the detection process. Through built-in intelligent algorithms for analysis and processing, accurate detection results can be obtained. At the same time, the testing platform also has data storage and traceability functions, making it convenient to record and query the data of each inspection, providing a strong basis for the quality control of the charging gun.

3、 One stop solution for airtightness detector

1. High precision sensor technology: The airtight detector is equipped with a high-precision pressure sensor that can measure extremely small pressure changes, with a resolution of up to 0.1Pa or even higher. This enables extremely accurate data support in detecting the leakage value of the charging gun, effectively avoiding the occurrence of misjudgment and missed judgment.

2. Fast response and stability performance: During the detection process, the airtightness detector can quickly respond to pressure changes, whether it is pressure rise during inflation or pressure fluctuations during stabilization and testing stages, it can quickly capture and accurately display. At the same time, its stable performance ensures high precision and reliability throughout long and numerous testing operations, without being affected by fluctuations in the instrument's own performance.

3. Intelligent operation and data analysis: The instrument has an intelligent operation interface, and operators only need to set relevant parameters to start the detection program. After the detection is completed, the instrument will automatically analyze and process the collected data, and visually display whether the detection results are qualified.

4. Supporting testing platform and fixtures: The provided testing platform and fixtures are perfectly compatible with the airtightness detector. The testing platform is made of sturdy and durable materials, with good stability and anti-interference ability, and can operate normally in various complex production environments. Customized fixtures are designed according to different models and specifications of charging guns, ensuring precise sealing and testing for each charging gun, greatly improving detection efficiency and accuracy.

Suzhou Loho Electronic Technology Co., Ltd. specializes in airtightness detectors, airtightness detectors, leak detectors, airtightness leak detectors, airtightness testers and other equipment. They are widely used, have fast detection speed, and are suitable for sealing, waterproofing, airtightness, leakage and other fields. Welcome to inquire by phone: 189-1262-8676