초록 ▼

An electrochemical cell constructed in accordance with the present invention includes a can for containing electrochemical materials including positive and negative electrodes and an electrolyte, the can having an open end and a closed end; a pressure relief mechanism formed in the closed end of the

An electrochemical cell constructed in accordance with the present invention includes a can for containing electrochemical materials including positive and negative electrodes and an electrolyte, the can having an open end and a closed end; a pressure relief mechanism formed in the closed end of the can for releasing internal pressure from within the can when the internal pressure becomes excessive; a first outer cover positioned on the closed end of the can to be in electrical contact therewith and to extend over the pressure relief mechanism; a second outer cover positioned across the open end of the can; and an insulator disposed between the can and the second outer cover for electrically insulating the can from the second outer cover. According to another embodiment, the second cover is dielectrically isolated from a current collector.

대표청구항 ▼

An electrochemical cell constructed in accordance with the present invention includes a can for containing electrochemical materials including positive and negative electrodes and an electrolyte, the can having an open end and a closed end; a pressure relief mechanism formed in the closed end of the

An electrochemical cell constructed in accordance with the present invention includes a can for containing electrochemical materials including positive and negative electrodes and an electrolyte, the can having an open end and a closed end; a pressure relief mechanism formed in the closed end of the can for releasing internal pressure from within the can when the internal pressure becomes excessive; a first outer cover positioned on the closed end of the can to be in electrical contact therewith and to extend over the pressure relief mechanism; a second outer cover positioned across the open end of the can; and an insulator disposed between the can and the second outer cover for electrically insulating the can from the second outer cover. According to another embodiment, the second cover is dielectrically isolated from a current collector. g immiscible with the pressure-sensitive adhesive component at room temperature, said layer having an anisotropic morphology comprising two axes perpendicular to each other, both parallel to the main surface layer, said axes comprising a longitudinal axis in the down-web direction and a transverse axis in the cross-web direction, said morphology further comprising at least two distinct domains, a first substantially continuous domain comprising the at least one pressure sensitive adhesive component and a second domain comprising the at least one thermoplastic, elastomeric, tackified elastomeric, or thermoplastic elastomeric material component being fibrillose to schistose in nature and oriented along the down-web direction. 2. The pressure-sensitive adhesive layer of claim 1 having at least one pressure-sensitive adhesive property from the group consisting of (a) a peel adhesion greater than and shear strength similar to that of the pressure-sensitive adhesive component if used alone, (2) a shear strength greater than and peel adhesion similar to that of the pressure-sensitive adhesive component if used alone, (3) an anisotropic peel adhesion, (4) an anisotropic shear strength and (5) a tensile stress in the down-web direction that is at least two times greater than the tensile stress in the cross-web direction for all elongations up to the break elongation. 3. The pressure-sensitive adhesive layer of claim 1 wherein the pressure-sensitive adhesive component is selected from the group consisting of acrylic, styrene block copolymer, natural rubber, synthetic rubber, silicone urea polymer, polyurethane, polyvinylmethylether and blends thereof. 4. The pressure-sensitive adhesive layer of claim 3 wherein the pressure-sensitive adhesive component is acrylic. 5. The pressure-sensitive adhesive layer of claim 4 wherein the acrylic pressure-sensitive adhesive component comprises a polymer of a C3-C12alkyl ester. 6. The pressure-sensitive adhesive layer of claim 5 wherein the acrylic pressure-sensitive adhesive component comprises a polymer of isooctyl acrylate, 2-ethyl-hexyl acrylate or n-butyl acrylate. 7. The pressure-sensitive adhesive layer of claim 4 wherein the acrylic pressure-sensitive adhesive component further comprises a polar component. 8. The pressure-sensitive adhesive layer of claim 7 wherein the polar component comprises acrylic acid, methacrylic acid, ethylene vinyl acetate, N-vinyl pyrrolidone and styrene macromer. 9. The pressure-sensitive adhesive layer of claim 8 wherein the acrylic pressure-sensitive adhesive component comprises about 100 to 80 weight percent alkyl ester component and up to about 20 weight percent polar component. 10. The pressure-sensitive adhesive layer of claim 1 wherein the pressure-sensitive adhesive component is silicone urea. 11. The pressure-sensitive adhesive layer of claim 1 wherein the pressure-sensitive adhesive component is poly-alpha-olefin. 12. The pressure-sensitive adhesive layer of claim 1 wherein the pressure-sensitive adhesive component is natural rubber or synthetic rubber. 13. The pressure-sensitive adhesive layer of claim 1 wherein the thermoplastic elastomeric materials comprise linear, radial, star, tapered or branched copolymers. 14. The pressure-sensitive adhesive layer of claim 1 wherein the thermoplastic elastomeric material component is selected from the group consisting of linear, radial, star and tapered styrene-isoprene block copolymers, linear styrene-(ethylene-butylene) block copolymers, linear styrene-(ethylene-propylene) block copolymers, styrene-isoprene-styrene block copolymers, star styrene-butadiene block copolymers, polyetheresters, and poly-alpha-olefins. 15. The pressure-sensitive adhesive layer of claim 1 wherein the thermoplastic material component is selected from the group consisting of ethylene-vinyl acetate, polyolefin, polystyrene, amorphous polyester, polymethyl methacrylate, isotactic polypropylene, linear low density poly