Battery with pressure relief channel
AssigneeLenovo (Singapore) Pte. :td.
InventorsJoseph Anthony Holung, Tin-Lup Wong, Bouziane Yebka
Life of this patent
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Abstract
A battery having an outer casing and an anode/cathode assembly within that casing, wherein the anode/cathode assembly includes plural anodes and cathodes and electrolyte therebetween. The battery has a pressure relief feature associated with the casing and a channel preservation element sufficiently rigid to preserve at least one gas passageway to the pressure relief feature under conditions of anode/cathode assembly warpage. Thus the gas in the passageway will not become impeded by anode/cathode assembly warpage.
Claims17
A battery comprising:
- an outer casing;
- an anode/cathode assembly within the casing, the assembly including plural anodes and cathodes and electrolyte therebetween;
- at least one pressure relief feature associated with the casing;
- and
- a channel preservation element sufficiently rigid to preserve at least one gas passageway to the pressure relief feature under conditions of anode/cathode assembly warpage, wherein the channel preservation element is centrally disposed within the assembly;
- and
- wherein the channel preservation element includes plural non-round channels adjacent to each other and/or closely juxtaposed to each other.
A battery comprising:
- a battery casing;
- means for providing pressure relief from gas build up in the battery casing;
- and
- means for ensuring that at least one gas passageway exists in the casing to the means for providing pressure relief;
- wherein the means for providing pressure relief includes at least one pressure relief feature, and the means for ensuring includes at least one channel preservation element;
- and
- wherein the channel preservation element includes plural non-round channels.
A method for providing pressure relief from gas build up in a battery, comprising:
- providing a channel preservation element sufficiently rigid to preserve at least one gas passageway under operating conditions in a battery;
- and
- disposing the element centrally in the jelly roll such that the channel communicates with a pressure relief feature;
- wherein the element includes plural non-round channels.
An apparatus comprising:
- an outer casing;
- an anode/cathode assembly within the casing, the assembly including plural anodes and cathodes and electrolyte therebetween;
- at least one pressure relief feature associated with the casing;
- and
- a channel preservation element sufficiently rigid to preserve at least one gas passageway to the pressure relief feature under conditions of anode/cathode assembly warpage;
- wherein the channel preservation element includes plural non-round channels.
Dependencies are inferred from the claim text.