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US 2018/0026245 A1Published application
Intumescent Battery Housing
AssigneeUrsatech Ltd.
InventorsJohn B. Page, Xiaoxiong Luo
Life of this patent
Estimating the term…
Abstract
A battery housing has a body and a lid mateable with the body. The body and the lid, when mated, provide a chamber dimensioned to hold at least one battery; and a venting passageway from the chamber. At least a portion of at least one of the body and the lid comprises an intumescent flame retardant material with an expansion ratio sufficient to drive gas from the chamber through the venting passageway and to seal the chamber when the material intumesces in the event of thermal runaway of a battery housed in the chamber.
Claims25
A battery housing comprising:
- a first housing portion;
- and
- a second housing portion mateable with said first housing portion;
- said first housing portion and said second housing portion, when mated, providing:
- a chamber dimensioned to hold at least one battery;
- and
- a venting passageway from said chamber;
- at least a portion of at least one of said first housing portion and said second housing portion comprising an intumescent flame retardant material with an expansion ratio sufficient to drive gas from said chamber through said venting passageway and to seal said chamber, when said material intumesces in the event of thermal runaway of a battery housed in said chamber,
- a first metal plug embedded in said first housing portion so as to extend from said chamber to an exterior of said housing and a second metal plug embedded in said second housing portion so as to extend from said chamber to an exterior of said housing, said first metal plug and said second metal plug for providing an electrical connection to a battery housed in said chamber.
6 more elements
A battery housing comprising:
- a first housing portion;
- and
- a second housing portion mateable with said first housing portion;
- said first housing portion and said second housing portion, when mated, providing:
- a chamber dimensioned to hold at least one battery;
- and
- a venting passageway from said chamber;
- at least a portion of at least one of said first housing portion and said second housing portion comprising an intumescent flame retardant material with an expansion ratio sufficient to drive gas from said chamber through said venting passageway and to seal said chamber, when said material intumesces in the event of thermal runaway of a battery housed in said chamber,
- wherein said venting passageway is blocked by a blockage that fails when exposed to pressure created in said chamber by said thermal runaway, and
- wherein said blockage is formed from an identical material to that of a material forming one of said first housing portion and said second housing portion.
7 more elements
Dependencies are inferred from the claim text.