PROTECTION METHOD AND DEVICE FOR BATTERY COMPONENTS, SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK, AND ELECTRICAL APPARATUS
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United States of America
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Issued Date -
Apr 3, 2025
app pub date -
Dec 13, 2024
filing date -
Dec 13, 2024
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Abstract
This application relates to a protection method for battery components that include an electrode assembly and a top cap assembly. The method includes: putting the battery components into a cavity, and vacuumizing the cavity to 100 kPa or below; introducing a first reactant into the cavity until a pressure rises by 1 Pa or above, and keeping the pressure for 1 ms or above; and optionally, vacuumizing the cavity to 100 kPa or below; and introducing a second reactant into the cavity until the pressure rises by 1 Pa or above, and keeping the pressure for 1 ms or above, so that protective layers are formed on surfaces of the battery components. This application further relates to a protection device for the battery components, a secondary battery, a battery module, a battery pack, and an electrical apparatus.
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