Medical device battery enclosure
In one example, the disclosure is directed to a medical device comprising an outer housing and a battery within the outer housing, where the battery is configured to supply power to one or more electronic components of the medical device. The battery comprises a first electrode, a second electrode, an electrolyte, and a multilayer battery enclosure. The multilayer battery enclosure comprises a substantially cylindrical member including a continuous multilayer body defining a cavity between a first end and a second end, and wherein at least one of the first end and second end are sealed to enclose the first electrode, second electrode, and the electrolyte within the cavity of the multilayer battery enclosure.
1. A battery comprising:
a first electrode;
a second electrode;
an electrolyte;
a multilayer battery enclosure, wherein the multilayer battery enclosure comprises a substantially cylindrical member including a continuous multilayer body defining a cavity between a first end and a second end,
wherein the multilayer battery enclosure comprises a coextruded, multilayer battery enclosure absent of seams beyond the first end and the second end;
a first seal at the first end to seal the first end; and
a second seal at the second end, wherein the first seal and the second seal combine to enclose the first electrode, second electrode, and the electrolyte within the cavity of the multilayer battery enclosure.
2. The battery of claim 1 , wherein the multilayer battery enclosure includes an inner layer and a barrier layer.
3. The battery of claim 2 , wherein the inner layer is formed of a material that is substantially insoluble with the electrolyte.
4. The battery of claim 2 , wherein the multilayer battery enclosure includes an outer layer separated from the inner layer by the barrier layer.
5. The battery of claim 2 , wherein the multilayer battery enclosure includes a bond layer bonding the inner layer to the barrier layer.
6. The battery of claim 2 , wherein the inner layer is substantially insoluble with the electrolyte.
7. The battery of claim 2 , wherein the inner layer comprises at least one of polyethylene or polypropylene.
8. The battery of claim 2 , wherein the barrier layer exhibits an oxygen and water permeability less than approximately 1 Barrer.
9. The battery of claim 2 , wherein the barrier layer comprises at least one of PEEK, polyimide, polyolefins, liquid crystal polymer, poly(propylene fumarate), Ethylene Vinyl Alcoho (EvOH), cyclic olefinic copolymers, particulate-filled polymer, or metalized polymer.
10. A battery comprising:
a first electrode;
a second electrode;
an electrolyte;
a multilayer battery enclosure, wherein the multilayer battery enclosure comprises a substantially cylindrical member including a continuous multilayer body defining a cavity between a first end and a second end,
wherein the multilayer battery enclosure comprises a coextruded, multilayer battery enclosure absent of seams beyond the first end and the second end,
wherein the multilayer battery enclosure is non-metallic;
a first seal at the first end to seal the first end; and
a second seal at the second end, wherein the first seal and the second seal combine to enclose the first electrode, second electrode, and the electrolyte within the cavity of the multilayer battery enclosure.
11. The battery of claim 1 , wherein the continuous multilayer body comprises a substantially tubular member that extends between the first seal and the second seal.
12. The battery of claim 1 , wherein the substantially cylindrical shape defines a substantially circular cross section, substantially elliptical cross-section, or oval cross section with substantially flat sides.
13. The battery of claim 1 , wherein the battery enclosure further comprises at least one end cap sealing at least one the first end and second end of the enclosure.
14. The battery of claim 1 , wherein the battery comprises a lithium ion battery.
15. A medical device comprising:
an outer housing; and
a battery within the outer housing, wherein the battery is configured to supply power to one or more electronic components of the medical device, wherein the battery comprises:
a first electrode;
a second electrode;
an electrolyte;
a multilayer battery enclosure, wherein the multilayer battery enclosure comprises a substantially cylindrical member including a continuous multilayer body defining a cavity between a first end and a second end,
wherein the multilayer battery enclosure comprises a coextruded, multilayer battery enclosure absent of seams beyond the first end and the second end;
a first seal at the first end to seal the first end; and
a second seal at the second end, wherein the first seal and the second seal combine to enclose the first electrode, second electrode, and the electrolyte within the cavity of the multilayer battery enclosure.
16. The medical device of claim 15 , wherein the multilayer battery enclosure includes an inner layer and a barrier layer.
17. The medical device of claim 16 , wherein the inner layer is formed of a material that is substantially insoluble with the electrolyte.
18. The battery of claim 1 , wherein at least one of the first seal and the second seal is a seam in the continuous multilayer body.
19. The battery of claim 1 , wherein at least one of the first seal and the second seal is a seam in the continuous multilayer body sealed via a thermal bond.