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US 9,853,267 B2Granted
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.
Claims5
A battery housing comprising:
- a body;
- and
- a lid mateable with said body;
- said body and said lid, when mated, providing:
- a plurality of battery chambers, each battery chamber dimensioned to hold at least one battery,
- a plurality of venting chambers,
- a plurality of first venting passageways, each first venting passageway extending from a battery chamber of said plurality of battery chambers to a venting chamber of said plurality of venting chambers, and
- a plurality of second venting passageways, each second venting passageway avoiding said battery chambers and extending from a venting chamber of said plurality of venting chambers to an exterior of said housing;
- at least a portion of at least one of said body and said lid comprising an intumescent flame retardant material with an expansion ratio sufficient to drive gas from any given battery chamber of said plurality of battery chambers through at least one of said plurality of first venting passageways, and seal said given battery chamber, when said material intumesces in the event of thermal runaway of a battery housed in said given battery chamber.
6 more elements
Dependencies are inferred from the claim text.