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Nickel-cadmium battery helium mass spectrometer leak rate test method

A test method, the technology of helium mass spectrometry, is applied in the field of helium mass spectrometry leak rate testing of nickel-cadmium batteries, which can solve the problems of inability to quantify the overall sealing performance of the battery, lack of data support, and low test accuracy, and achieve convenient testing, accurate data, and high testing level. high effect

Inactive Publication Date: 2016-07-20
CHINA ELECTRONIC TECH GRP CORP NO 18 RES INST
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Problems solved by technology

But at the same time, the disadvantage is that due to the limitations of the method itself, the test accuracy is low, and the overall sealing performance of the battery cannot be quantified, and there are technical problems such as lack of data support for the battery to meet the satellite's long-life and high-reliability requirements.

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  • Nickel-cadmium battery helium mass spectrometer leak rate test method
  • Nickel-cadmium battery helium mass spectrometer leak rate test method

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Embodiment 1

[0017] See attached figure 1 and figure 2 .

[0018] A method for testing the helium mass spectrometry leak rate of a nickel-cadmium battery: a helium mass spectrometry leak rate test is introduced into the sealing performance inspection of a nickel-cadmium single battery, and after the single battery is sealed, the single battery that has passed the chemical leak detection is placed in a sealed Fill the tank with helium at a specified pressure, take it out after a specified time at constant pressure, use nitrogen to spray the battery surface and welds, and then put it into the detection chamber of the system. When the vacuum degree of the detection chamber reaches the specified requirements, Open the detection valve, and use the helium mass spectrometer leak detector to quantitatively detect the overall leak rate of the nickel-cadmium single battery. Through this method, it is detected that the gas leakage rate level of the single battery is better than 1.0×10 -7 Pa·m 3 ...

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Abstract

The invention relates to a nickel-cadmium battery helium mass spectrometer leak rate test method, and belongs to the technical field of nickel-cadmium batteries. The nickel-cadmium battery helium mass spectrometer leak rate test method is characterized in that the helium mass spectrometer leak rate test is adopted. During the test process, after a nickel-cadmium battery cell is sealed, the nickel-cadmium battery cell, qualified for chemical leak detection test, is placed in a closed tank. After that, the helium gas is filled into the closed tank. When the pressure inside the closed tank is constant, the timing is started. After that, the closed tank is placed in a detection chamber of a system. When the vacuum degree inside the detection chamber reaches the specified requirement, a check valve is opened. By means of a helium mass spectrometer leak detector, the overall leak rate of the nickel-cadmium battery cell is quantitatively detected. The nickel-cadmium battery helium mass spectrometer leak rate test method is simple in operation, convenient in test, accurate in data, high in test level and high in reliability. Therefore, the nickel-cadmium battery can be effectively and quantitatively detected.

Description

technical field [0001] The invention belongs to the technical field of cadmium-nickel batteries, in particular to a method for testing the helium mass spectrum leak rate of cadmium-nickel batteries. Background technique [0002] At present, the sealing performance of the existing nickel-cadmium battery is checked by chemical method. On the sealed battery, the leak detection of each welding seam of the battery is carried out by using alcohol phenolphthalein solution. This method is easy to operate, the result is intuitive, and it can realize the location of the leakage point of the battery weld seam. But at the same time, the disadvantage is that due to the limitations of the method itself, the test accuracy is low, and the overall sealing performance of the battery cannot be quantified, and there are technical problems such as lack of data support for the battery to meet the satellite's long-life and high-reliability requirements. . Contents of the invention [0003] The...

Claims

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Application Information

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IPC IPC(8): G01M3/20
Inventor 罗云飞赵宏伟辛宇光郭忠伟李惠芬王庆军许志伟
Owner CHINA ELECTRONIC TECH GRP CORP NO 18 RES INST
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