Water activated battery system having enhanced start-up behavior
First Claim
1. A lithium battery cell for providing a requisite amount of electrical power, the battery cell deployed for use and operated in or on a waterbody, the cell comprising:
- a lithium anode structure comprising;
a lithium anode comprising an electroactive lithium component; and
a substantially impervious lithium ion conductive layer component positioned adjacent the anode and configured to protect the electroactive lithium from direct contact with waterbody liquid;
a cathode structure comprising a cathode component, the cathode structure open to the external environment for receiving waterbody liquid such that the waterbody liquid can directly contact the cathode component and serve as an electrolytic medium between the cathode and the lithium anode structure; and
a thermal agent component positioned to come into direct contact with waterbody liquid as a result of cell deployment, the thermal agent component configured to be activated by contact with waterbody liquid to generate heat for reducing internal cell resistance;
wherein the contact between the thermal agent component and the waterbody liquid produces a heat evolving corrosion reaction of the thermal agent.
1 Assignment
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Accused Products
Abstract
A water activated lithium battery cell having a thermal agent component for warming up cell components upon deployment. Also a water-activated battery system that is adapted to operate in and/or on the surface of a waterbody (i.e., a body of water including those which are natural or man made). In various embodiments the battery system comprises an operably breachable hermetic enclosure and at least one lithium battery cell having an open-cathode architecture, the lithium cell disposed inside the hermetic enclosure and therein maintained in an open ionic circuit condition (i.e., an inactive state) throughout battery system storage. Moreover, optionally, a thermal agent may be disposed inside the hermetic enclosure for warming up one or more battery cell components, the agent typically water activated, which is to mean that it (the thermal agent) evolves heat by reacting with water.
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Citations
11 Claims
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1. A lithium battery cell for providing a requisite amount of electrical power, the battery cell deployed for use and operated in or on a waterbody, the cell comprising:
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a lithium anode structure comprising; a lithium anode comprising an electroactive lithium component; and a substantially impervious lithium ion conductive layer component positioned adjacent the anode and configured to protect the electroactive lithium from direct contact with waterbody liquid; a cathode structure comprising a cathode component, the cathode structure open to the external environment for receiving waterbody liquid such that the waterbody liquid can directly contact the cathode component and serve as an electrolytic medium between the cathode and the lithium anode structure; and a thermal agent component positioned to come into direct contact with waterbody liquid as a result of cell deployment, the thermal agent component configured to be activated by contact with waterbody liquid to generate heat for reducing internal cell resistance; wherein the contact between the thermal agent component and the waterbody liquid produces a heat evolving corrosion reaction of the thermal agent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification