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AssigneesLG Energy Solution, Ltd., Konkuk University Industrial Cooperation Corp.
InventorsYeo-Min Yoon, Bum-Young Jung, Jeong-Ho Ha, Ki-Jae Kim, Yong-Keon Ahn, Kyu-Bin Lee
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There are provided a flame retardant element for suppressing flame propagation when a fire occurs during the use of a lithium secondary battery, thereby ensuring safety of the secondary battery while in use, a method for manufacturing the flame retardant element, and a secondary battery module and a secondary battery pack comprising the flame retardant element. The proposed flame retardant element is a composite pad having a stack of at least two polymer resin single layers including fire extinguishing materials having different fire extinguishing and flame retardant mechanisms, the composite pad includes a first polymer resin single layer and a second polymer resin single layer, and the first polymer resin single layer includes the fire extinguishing material which takes effect in a lower temperature range than the second polymer resin single layer.
A composite pad having a stack of at least three polymer resin single layers comprising two first polymer resin single layers and a second polymer resin single layer sandwiched between the two first polymer resin single layers, and
A composite pad, having a stack of at least two polymer resin single layers including different types of fire extinguishing materials, wherein the at least two polymer resin single layers comprises a first polymer resin single layer and a second polymer resin single layer, and
A method for manufacturing a composite pad, comprising forming at least three polymer resin single layers comprising two first polymer resin single layers and a second polymer resin single layer sandwiched between the two first polymer resin single layers, and
Dependencies are inferred from the claim text.