Electrochemical energy storage devices and housings
The disclosure provides electrochemical batteries, electrochemical battery housings and methods for assembling electrochemical batteries. The battery housing can include a container, a container lid assembly and an electrical conductor. The container can include a cavity that extends into the container from a cavity aperture. The lid assembly can seal the cavity, and can include an electrically conductive container lid and an electrically conductive flange. The container lid can cover the cavity aperture and can include a conductor aperture that extends through the container lid. The flange can cover the conductor aperture and can be electrically isolated from the container lid. The conductor can be connected to the flange and can extend through the conductor aperture into the cavity. The conductor can be electrically isolated from the container lid.
1. An electrochemical battery, comprising:
a container including a cavity that extends into the container from a cavity aperture;
an electrochemical battery cell arranged within the cavity, wherein the electrochemical battery cell comprises an electrolyte arranged between a negative electrode and a positive electrode, and wherein at least one of the negative electrode and the positive electrode is liquid at an operating temperature of the electrochemical battery greater than 250° C.;
a container lid assembly sealing the battery cell in the cavity, the container lid assembly including an electrically conductive container lid and an electrically conductive flange, wherein the container lid covers the cavity aperture and includes a conductor aperture that extends through the container lid, wherein the electrically conductive flange covers the conductor aperture and is electrically isolated from the container lid, and wherein the electrically conductive flange is in electrical communication with the negative metal electrode and the container lid is in electrical communication with the positive electrode; and
an electrical conductor extending through the conductor aperture and electrically coupled to the electrochemical battery cell and the electrically conductive flange, wherein the conductor is electrically isolated from the container lid.
2. The battery of claim 1 , further comprising a current collector electrically coupled to the negative electrode, wherein the current collector is connected to the conductor, and wherein the conductor is connected to the electrically conductive flange.
3. The battery of claim 1 , further comprising a gasket arranged between and electrically isolating the electrically conductive flange and the container lid.
4. The battery of claim 3 , wherein the gasket comprises dielectric material.
5. The battery of claim 1 , wherein said container lid assembly hermetically seals said battery cell in said cavity.
6. The battery of claim 1 , wherein the container is in electrical communication with an electrode of the electrochemical battery cell.
7. The battery of claim 1 , wherein the electrochemical battery is capable of storing at least 25 Wh of energy.
8. The battery of claim 1 , wherein a ratio of an area of the conductor aperture to an area of the container is less than 0.2.
9. The battery of claim 1 , wherein the flange covers a portion of the conductor aperture.
10. The battery of claim 1 , further comprising a current collector within the cavity and connected to the conductor.
11. The battery of claim 3 , wherein the gasket comprises a ceramic material.
12. The battery of claim 3 , wherein the gasket comprises aluminum nitride.
13. The battery of claim 3 , wherein the gasket is annular.
14. The battery of claim 10 , wherein the current collector is a metal foam or metal mesh.
15. The battery of claim 1 , wherein the positive electrode comprises antimony.
16. The battery of claim 1 , wherein the negative electrode comprises calcium.
17. The battery of claim 1 , wherein the electrically conductive flange is connected to the container lid with a brazed ceramic.
18. The battery of claim 1 , wherein the electrically conductive flange is connected to the container lid with a plurality of fasteners.