Rechargeable battery with internal current limiter and interrupter
A high energy density rechargeable (HEDR) battery employs a combined current limiter/current interrupter to prevent thermal runaway in the event of internal discharge or other disruption of the separator. The combined current limiter/current interrupter is interior to the battery.
1. A battery, comprising:
a current collector; and
an electrode electrically coupled with the current collector via a laminated connection, wherein the electrode includes a heat-sensitive material configured to respond to an activation of at least a temperature trigger by at least generating a liquid that vaporizes to form a gas, wherein the gas interrupts the laminated connection between the current collector and the electrode by at least causing the electrode to delaminate from the current collector, wherein the electrode delaminating from the current collector forms a nonconductive gap between the electrode and the current collector by at least separating the electrode from the current collector, wherein the formation of the nonconductive gap causes an electrical decoupling of the electrode and the current collector, and wherein the electrical decoupling of the electrode and the current collector interrupts a current flow within the battery.
2. The battery of claim 1 , wherein the gas comprises a fire retardant gas.
3. The battery of claim 1 , wherein the gas is further formed by a reaction between the liquid and the current collector, a separator, and/or an electrolyte comprising the battery.
4. The battery of claim 1 , further comprising a current limiter.
5. The battery of claim 4 , wherein the current limiter is interposed between the electrode and the current collector.
6. The battery of claim 4 , wherein a resistivity of the current limiter is greater than an internal resistivity of the electrode at temperatures above a temperature range for standard operation, and wherein the resistivity of the current limiter is less than the internal resistivity of the electrode at temperatures within the temperature range for standard operation.
7. The battery of claim 6 , wherein the resistivity of the current limiter does not transition at temperatures within the temperature range for standard operation.
8. The battery of claim 1 , wherein the electrode is further configured to delaminate from the current collector in response to an activation of a voltage trigger.
9. The battery of claim 1 , wherein the electrode is further configured to decompose upon the activation of at least the temperature trigger, and wherein the decomposition of the electrode further interrupts the current flow within the battery.
10. The battery of claim 1 , wherein the temperature trigger is activated when temperature exceeds a temperature range for standard operation.
11. The battery of claim 1 , wherein the electrode comprises an anode or a cathode of the battery.
12. The battery of claim 1 , wherein the electrode further comprises an electrochemically active material.
13. The battery of claim 12 , wherein the electrochemically active material comprises lithium (Li), aluminum (Al), potassium (K), sodium (Na), magnesium (Mg), and/or silicon (Si).
14. The battery of claim 1 , wherein the heat sensitive material comprises an organic carbonate and/or an inorganic carbonate.
15. The battery of claim 1 , wherein the heat sensitive material comprises a barium (Ba) carbonate, a calcium (Ca) carbonate, a cadmium (Cd) carbonate, a cobalt (Co) carbonate, a copper (Cu) carbonate, an iron (Fe) carbonate, a potassium (K) carbonate, a lithium (Li) carbonate, a magnesium (Mg) carbonate, a manganese (Mn) carbonate, a sodium (Na) carbonate, a nickel (Ni) carbonate, a lead (Pb) carbonate, a strontium (Sr) carbonate, and/or a zinc (Zn) carbonate.
16. A method, comprising:
forming a nonconductive gap between an electrode and a current collector within a battery, wherein the electrode and the current collector are electrically coupled via a laminated connection, wherein the electrode includes a heat-sensitive material configured to respond to an activation of at least a temperature trigger by at least generating a liquid that vaporizes to form a gas, wherein the gas interrupts the laminated connection between the current collector and the electrode by at least causing the electrode to delaminate from the current collector, wherein the electrode delaminating from the current collector forms the nonconductive gap between the electrode and the current collector by at least separating the electrode from the current collector, wherein the formation of the nonconductive gap electrically decouples the electrode and the current collector, and wherein the electrical decoupling of the electrode and the current collector interrupts a current flow within the battery.