Device and method for detecting leak of upper cover of power battery
A power battery and battery technology, which is applied in the direction of detecting the appearance of fluid at the leakage point and using liquid/vacuum degree to measure the liquid tightness, etc., can solve the problems of complex structure of the leak detection device and poor effectiveness of leak detection, and achieve the goal of measuring Good leakage effect, low cost, simple and reasonable structure design
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[0014] Such as figure 1 As shown, a vertically arranged cylinder 2 is fixed on the bracket 1, the lower end of the cylinder rod 7 is connected with a battery upper cover plugging head 4, and the battery upper cover plugging head is connected with a charging valve 6 and is blocked on the battery cover There is an air outlet at the bottom of the head. There is a battery cover bracket 3 below the battery cover plugging head, such as figure 2 As shown, the battery cover bracket is composed of two brackets, and an air storage tank 5 is formed between the two brackets.
[0015] When leak testing, place the leak testing device in a station box containing liquid (such as alcohol or water), place the power battery upper cover on the battery upper cover bracket 3, and operate the air cylinder valve to make the cylinder rod 7 Move downwards until the battery upper cover plug 4 and the power battery upper cover explosion-proof valve interface are pressed; open the charging valve 6, the ga...
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