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US 8,932,750 B2Granted
Aluminum housing with a hermetic seal
AssigneeFastcap Systems Corporation
InventorsJohn J Cooley, Riccardo Signorelli, Christopher J S Deane, James Epstein
Life of this patent
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Abstract
A housing for an energy storage cell includes an interior which provides beneficial properties to fabricators of the cell. The cell may be hermetically sealed by conventional laser welding techniques.
Claims36
A housing for an energy storage cell, the housing comprising:
- a body comprising a first material and a cap formed of a multi-layer material, the cap comprising a hermetically sealed electrode assembly disposed therein;
- wherein a first layer of the multi-layer material is compatible with the first material, and a second layer of the multi-layer material is compatible with hermitically sealing the assembly to the cap, and
- wherein the hermetically sealed electrode assembly is configured to maintain a leak rate of less than 5.0×10−6 standard He-cc/sec at temperatures throughout an operational temperature range of about −40 degrees Celsius to about 210 degrees Celsius.
A method for housing an energy storage cell, the method comprising:
- selecting a body comprising a first material that exhibits low chemical reactivity with an electrolyte;
- selecting a cap formed of a multi-layer material, the cap comprising a hermetically sealed electrode assembly disposed therein, wherein a first layer of the multi-layer material is compatible with the first material, and a second layer of the multi-layer material is compatible with hermitically sealing the assembly to the cap;
- and
- placing the storage cell within the body,
- wherein the hermetically sealed electrode assembly is configured to maintain a leak rate of less than 5.0×10−6 standard He-cc/sec at temperatures throughout an operational temperature range of −40 degrees Celsius to 210 degrees Celsius.
2 more elements
An energy storage comprising:
- an energy storage cell disposed within a housing comprising a cap hermetically sealed to a body, the body formed of a first material that exhibits low chemical reactivity with an electrolyte;
- the cap formed of a multi-layer material and comprising a hermetically sealed electrode assembly disposed therein;
- wherein the hermetically sealed electrode assembly is configured to maintain a leak rate of less than 5.0×10−6 standard He-cc/sec at temperatures throughout an operational temperature range of −40 degrees Celsius to 210 degrees Celsius.
An energy storage comprising:
- a housing comprising:
- a cap;
- and
- a body comprising a multilayer material;
- wherein the multilayer material comprises:
- a first layer of material that is substantially compatible with an electrolyte of an energy storage cell disposed within the housing;
- and
- at least a second layer at least partially disposed over the first layer, wherein the second layer provides structural integrity for the housing;
- wherein at least a portion of the first layer faces an interior of the housing and is exposed to the electrolyte;
- and
- wherein the portion of the first layer that faces the interior of the housing is configured to conduct electricity to or from the energy storage,
- wherein the cap comprises a cap formed of a multi-layer cap material, the cap comprising a hermetically sealed electrode assembly disposed therein;
- wherein a first layer of the multi-layer cap material is compatible with a material of the body, and a second layer of the multi-layer cap material is compatible with hermetically sealing the assembly to the cap, and
- wherein the hermetically sealed electrode assembly is configured to maintain a leak rate of less than 5.0×10-6 standard He-cc/sec at temperatures throughout an operational temperature range of −40 degrees Celsius to 210 degrees Celsius.
11 more elements
Dependencies are inferred from the claim text.