Short-circuit protection of battery cells using fuses
Apparatus, systems, and methods described herein relate to safety devices for electrochemical cells comprising an electrode tab electrically coupled to an electrode, the electrode including an electrode material disposed on a current collector. In some embodiments, a fuse can be operably coupled to or formed in the electrode tab. In some embodiments, the fuse can be formed by removing a portion of the electrode tab. In some embodiments, the fuse can include a thin strip of electrically resistive material configured to electrically couple multiple electrodes. In some embodiments, the current collector can include a metal-coated deformable mesh material such that the current collector is self-fusing. In some embodiments, the fuse can be configured to deform, break, melt, or otherwise discontinue electrical communication between the electrode and other components of the electrochemical cell in response to a high current condition, a high voltage condition, or a high temperature condition.
1. An electrochemical cell, comprising:
a cathode tab electrically coupled to a cathode; and
an anode tab electrically coupled to an anode, the anode separated from the cathode by an ion-permeable membrane;
wherein at least one of the cathode tab and the anode tab includes a fuse configured to discontinue electrical communication through the at least one of the cathode tab and the anode tab, the fuse including a polymer mesh.
2. The electrochemical cell of claim 1 , wherein the fuse is formed by removing a portion of at least one of the cathode tab and the anode tab.
3. The electrochemical cell of claim 1 , wherein the fuse is configured to discontinue communication of electrical current through the at least one of the cathode tab and the anode tab in response to a voltage reaching or exceeding a voltage threshold.
4. The electrochemical cell of claim 1 , wherein the fuse includes a plurality of thinned portions configured to break when a current being communicated through the fuse reaches or exceeds a current threshold.
5. The electrochemical cell of claim 1 , wherein the electrochemical cell further includes a pouch material dimensioned and configured to at least partially contain the cathode, the anode, and the ion-permeable membrane.
6. The electrochemical cell of claim 5 , wherein the fuse is disposed within the pouch material.
7. The electrochemical cell of claim 2 , wherein the fuse is formed by removing a plurality of portions of at least one of the anode tab and the cathode tab.
8. The electrochemical cell of claim 7 , wherein removing the plurality of portions of at least one of the anode tab and the cathode tab defines a plurality of apertures through at least one of the anode tab and the cathode tab.
9. The electrochemical cell of claim 8 , wherein a first aperture of the plurality of apertures is positioned between about 100 μm and about 20 mm from a first edge of at least one of the anode tab and the cathode tab, and
wherein a second aperture of the plurality of apertures is positioned between about 100 μm and about 20 mm from a second edge of at least one of the anode tab and the cathode tab, the second edge opposite the first edge.
10. The electrochemical cell of claim 9 , wherein the position of the first aperture and the second aperture forms a first bridge and a second bridge, respectively, through which current is communicated during normal operation of the electrochemical cell.
11. The electrochemical cell of claim 1 , wherein the fuse is configured such that it will not break until a voltage of a current communicated through the fuse reaches or exceeds a voltage threshold.
12. The electrochemical cell of claim 1 , wherein the fuse is configured such that it will not break until a current level of a current communicated through the fuse reaches or exceeds a current threshold.
13. The electrochemical cell of claim 1 , wherein the polymer mesh includes at least one of polyethylene (PE), polypropylene (PP), polystyrene (PS), polyvinyl (PV), polyvinyl chloride (PVC), polymethyl methacrylate, intrinsically conducting polymers, stretch-oriented polyacetylene, bioplastics, polyamides, polycarbonates, polyesters, high-density polyethylene, low-density polyethylene, polyethylene terephthalate, polyurethanes, polyvinylidene chloride, acrylonitrile butadiene styrene (ABS), polycarbonate/ABS, polyepoxide, polytetrafluoroethylene, phenolics, phenol formaldehyde, melamine formaldehyde, urea-formaldehyde, polyetheretherketone (PEEK), polyetherimide (PEI), plastarch, polylactic acid (PLA), polysulfone, silicone, and furan.
14. The electrochemical cell of claim 1 , wherein the polymer mesh is coated with a metal.
15. The electrochemical cell of claim 14 , wherein the metal includes at least one of nickel, copper, aluminum, carbon, and gold.
16. An electrochemical cell, comprising:
a cathode including a cathode material disposed on a cathode current collector;
an anode including an anode material disposed on an anode current collector; and
an ion-permeable membrane interposed between the cathode and the anode,
wherein at least one of the cathode current collector and the anode current collector includes a fuse configured to discontinue electrical communication through at least one of the cathode current collector and the anode current collector, the fuse including a polymer mesh.
17. The electrochemical cell of claim 16 , wherein the polymer mesh is deformable.
18. The electrochemical cell of claim 16 , wherein the polymer mesh includes at least one of polyethylene (PE), polypropylene (PP), polystyrene (PS), polyvinyl (PV), polyvinyl chloride (PVC), polymethyl methacrylate, intrinsically conducting polymers, stretch-oriented polyacetylene, bioplastics, polyamides, polycarbonates, polyesters, high-density polyethylene, low-density polyethylene, polyethylene terephthalate, polyurethanes, polyvinylidene chloride, acrylonitrile butadiene styrene (ABS), polycarbonate/ABS, polyepoxide, polytetrafluoroethylene, phenolics, phenol formaldehyde, melamine formaldehyde, urea-formaldehyde, polyetheretherketone (PEEK), polyetherimide (PEI), plastarch, polylactic acid (PLA), polysulfone, silicone, and furan.
19. The electrochemical cell of claim 16 , wherein the polymer mesh is coated with a metal.
20. The electrochemical cell of claim 19 , wherein the metal includes at least one of nickel, copper, aluminum, carbon, and gold.
21. The electrochemical cell of claim 16 , wherein the fuse is formed by removing a portion of at least one of the cathode current collector and the anode current collector.
22. The electrochemical cell of claim 21 , wherein the fuse is formed by removing a plurality of portions of at least one of the anode current collector and the cathode current collector.
23. The electrochemical cell of claim 22 , wherein the plurality of portions define a plurality of apertures through at least one of the anode current collector and the cathode current collector.
24. The electrochemical cell of claim 23 , wherein a first aperture of the plurality of apertures is positioned between about 100 μm and about 5 mm from a first edge of at least one of the anode current collector and the cathode current collector, and
wherein a second aperture of the plurality of apertures is positioned between about 100 μm and about 5 mm from a second edge of at least one of the anode current collector and the cathode current collector, the second edge opposite the first edge.
25. The electrochemical cell of claim 24 , wherein the position of the first aperture and the second aperture forms a first bridge and a second bridge, respectively, through which current is communicated during normal operation of the electrochemical cell.
26. The electrochemical cell of claim 16 , wherein the fuse is configured to discontinue communication of electrical current through the at least one of the cathode current collector and the anode current collector in response to a voltage reaching or exceeding a voltage threshold.
27. The electrochemical cell of claim 16 , wherein the fuse includes a plurality of thinned portions configured to break when a current being communicated through the fuse reaches or exceeds a current threshold.
28. The electrochemical cell of claim 16 , wherein the electrochemical cell further includes a pouch material dimensioned and configured to at least partially contain the cathode, the anode, and the ion-permeable membrane.
29. The electrochemical cell of claim 28 , wherein the fuse is disposed within the pouch material.
30. The electrochemical cell of claim 16 , wherein the fuse is configured such that it will not break until a voltage of a current communicated through the fuse reaches or exceeds a voltage threshold.
31. The electrochemical cell of claim 16 , wherein the fuse is configured such that it will not break until a current level of a current communicated through the fuse reaches or exceeds a current threshold.