Venting mechanisms for battery cells
AssigneeLenovo (Singapore) Pte. Ltd.
InventorsBouziane Yebka, Jeremy R. Carlson, Larry G. Estes, Joseph A. Holung, Timothy Humphrey, Tin-Lup Wong
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Abstract
The provision of improved venting in battery cells by way of better preventing pressure buildup in the cells. Via different variants of the present invention, the following advantages are achieved: Gas can escape from the cell without clogging the vent; gas buildup is avoided while the venting valve can operate in a consistently reliable manner; the solutions presented are sufficiently versatile as to be applicable to a variety of cells on the market; and the risk of explosion is virtually eliminated.
Claims38
An apparatus comprising:
- a battery-operable device;
- and
- a battery cell which provides power to said battery-operable device;
- said battery cell comprising:
- a terminal;
- and
- a venting arrangement which acts to vent gas responsive to pressure buildup within said battery cell;
- said venting arrangement comprising a yieldable element which yields under pressure and a support which supports said yieldable element;
- said venting arrangement further comprising windowing disposed in said terminal, said windowing acting to vent gas to ambient;
- said venting arrangement further comprising a supplementary measure which forestalls collapse of said support and said yieldable element towards said terminal responsive to pressure buildup within said battery cell.
A battery cell comprising:
- a terminal;
- and
- a venting arrangement which acts to vent gas responsive to pressure buildup within said battery cell;
- said venting arrangement comprising a yieldable element which yields under pressure and a support which supports said yieldable element;
- said venting arrangement further comprising windowing disposed in said terminal, said windowing acting to vent gas to ambient;
- said venting arrangement further comprising a supplementary measure which forestalls collapse of said support and said yieldable element towards said terminal responsive to pressure buildup within said battery cell.
Dependencies are inferred from the claim text.