Adhesive Pad for Lithium Battery Penetration Safety

The patent applies beforehand cushioning by introducing a penetration safety member (such as a porous layer or safety agent) that is pre-positioned between the anode and cathode. When penetration occurs, this member absorbs the impact energy and prevents direct contact between electrodes, thereby cushioning the harmful effects before thermal runaway can initiate. This resolves the contradiction by preparing a protective mechanism in advance that activates only under penetration conditions.

The patent employs an intermediary approach by inserting a penetration safety member that acts as a mediator between the anode and cathode. This intermediary layer (comprising porous materials or safety agents) physically separates the electrodes during penetration events, preventing direct electrical contact while allowing the battery structure to remain intact. This mediator prevents the harmful short circuit without requiring changes to the electrode materials themselves.

The patent applies blessing in disguise by utilizing the porous penetration safety member to manage the combustion process differently. Instead of trying to prevent all combustion reactions, the porous structure allows controlled gas permeation that prevents heat accumulation while still containing the reaction. The safety member transforms the harmful heat accumulation into a manageable process by allowing heat dissipation through its porous structure, thereby converting the harmful thermal runaway into a controlled safety response.

The patent introduces safety agents or porous materials that create an inert or less reactive environment between the electrodes. These materials can absorb or neutralize the organic electrolyte's combustibility, creating a protective zone that prevents spontaneous combustion progression. By modifying the local environment with inert or flame-retardant properties, the patent suppresses the combustion reaction without requiring temperature control mechanisms.

The patent applies merging by integrating the penetration safety member directly into the existing battery structure, such as incorporating it into the separator layer or adhering it to the exterior material housing. By combining the safety function with existing structural components rather than adding completely separate systems, the patent reduces the increase in device complexity while maintaining the oxygen blocking and gas containment functions.

The patent utilizes thin film technology by employing a thin adhesive pad comprising substrate and adhesive layers. This thin film structure provides effective oxygen blocking and gas containment without adding significant bulk or complexity. The flexible nature of the thin film allows it to conform to the battery's existing structure, integrating smoothly without requiring rigid additional components or complex assembly procedures.