Battery module having structure capable of preventing inflow of air into module when thermal runaway occurs and battery pack including same
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United States of America Patent
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Oct 4, 2022
Grant Date -
Feb 18, 2021
app pub date -
Mar 4, 2020
filing date -
Mar 6, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
A battery module includes a cell stack having a plurality of battery cells; a module case configured to accommodate the cell stack; a pair of module covers configured to cover openings at both sides of the module case; and a ventilation unit installed through the module cover. The ventilation unit includes a one-way venting valve disposed at a center of a perforation hole formed through the module cover; a first hole sealing portion attached onto an inner wall of the perforation hole; and a second hole sealing portion attached onto an outer circumference of the one-way venting valve.
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