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A battery seal is a safety device that tightly seals a battery to prevent the loss of electrolytes. It is sealed to the cell by means of radial crimping pressure or by impact.
It is the only easy way for sealed batteries. A battery discharged to 10.5 volts at C20 should bounce back to approximately 11.7 volts, open-circuit. When access to the cell electrolyte is possible, a good hydrometer is the most accurate way to check state of charge and for cell imbalances.
To cope with the issue, a precision-concentrated battery defect detection method crossing different temperatures and vehicle states is constructed. The method only uses sparse and noisy voltage from existing onboard sensors.
Once a battery cell is sealed, it is filled with liquid electrolyte through a small hole in the cap. When filling is complete, the hole is covered by a sealing pin, or cover cap, which is then welded in place to secure it.
Battery defect detection based on the abnormality of external parameters is a promising way to reduce this kind of thermal runaway accidents and protect EV consumers from fire danger. However, the influence of temperature and EV states, i.e., charging and driving, on the battery characteristic will complicate the method establishment.
The training process only uses data of normal batteries to cope with the inadequacy of thermal runaway battery data. The results show that the method can detect defected batteries 13 days ahead the thermal runaway while achieve the precision of 99.2%.
The method of the embodiment can perform seal detection on battery packs in a safe, …
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Battery defect detection based on the abnormality of external parameters is …
Energy storage batteries require stringent leak detection for battery performance and battery safety and air tightness testing due to potential hazards and …
The utility model relates to the technical field of lithium batteries, in particular to a lithium battery sealing detection device with a leakage recovery function, which comprises a box body,...
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The battery sealing detection method comprises the steps of sequentially carrying out annular cutting treatment, curing treatment, section cutting treatment and polishing and cleaning...
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Keeping the battery pack sealed from external elements is key to an EV''s performance and longevity. Seals range from foam-in-place gasketing and silicone foam rubbers to butyl-coated …
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The battery sealing detection method comprises the steps of sequentially carrying out annular …
In order to improve the sealing quality detection efficiency of lithium ion battery and solve the disadvantages of excessive participation in labor and low degree of automation in the …
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In order to improve the sealing quality detection efficiency of lithium ion battery and solve the …
The method of the embodiment can perform seal detection on battery packs in a safe, convenient and efficient mode, and meanwhile quantificationally determine seal degrees of battery packs.
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The utility model relates to the technical field of lithium batteries, in particular to a lithium …