Pressure-induced battery pack venting with filtering
AssigneeInternational Business Machines Corporation
InventorsNoah Singer, Prabjit Singh, John G. Torok, David C. Long
Life of this patent
Estimating the term…
Abstract
A battery pack is provided which includes an enclosure. The enclosure includes a battery cell compartment and a vent. The battery cell compartment is a sealed compartment, except for the vent, and the vent facilitates pressure-induced venting of gas from the battery cell compartment. One or more battery cells are disposed within the battery cell compartment, and the battery pack also includes a filter system associated with the enclosure. The filter system filters the pressure-induced venting of gas from the battery cell compartment resulting from a thermal runaway event at a battery cell of the one or more battery cells within the battery cell compartment of the enclosure.
Claims17
A battery pack comprising:
- an enclosure, the enclosure including a battery cell compartment and a vent, the battery cell compartment being a sealed compartment, except for the vent, and the vent facilitating pressure-induced venting of gas from the battery cell compartment;
- one or more battery cells disposed within the battery cell compartment;
- and
- a filter system associated with the enclosure, the filter system filtering pressure-induced venting of gas from the battery cell compartment resulting from a thermal runaway event at a battery cell of the one or more battery cells within the battery cell compartment, and the filter system including:
- a filter material shaped as a plurality of beads which are dispersed throughout the battery cell compartment and fill available space within the battery cell compartment, surrounding the one or more battery cells within the battery cell compartment.
A battery pack comprising:
- an enclosure, the enclosure including a battery cell compartment and a vent, the battery cell compartment being a sealed compartment, except for the vent, and the vent facilitating pressure-induced venting of gas from the battery cell compartment;
- a circuit board;
- multiple battery cells mounted spaced apart to the circuit board within the battery cell compartment;
- and
- a filter system associated with the enclosure, the filter system to filter the pressure-induced venting of gas from the battery cell compartment resulting from a thermal runaway event at a battery cell of the multiple battery cells within the battery cell compartment, the filter system including a filter material configured as molecular gas sieves to filter, at least in part, the gas resulting from the thermal runaway event, the filter material being shaped as a plurality of beads which are dispersed throughout the battery cell compartment and fill available space within the battery cell compartment, surrounding the one or more battery cells within the battery cell compartment.
A method of fabricating a battery pack comprising:
- providing an enclosure, the enclosure including a battery cell compartment and a vent, the battery cell compartment being a sealed compartment except for the vent, and the vent facilitating pressure-induced venting of gas from the battery cell compartment;
- providing a circuit board;
- mounting multiple battery cells spaced apart to the circuit board within the battery cell compartment;
- and
- associating a filter system with the enclosure, the filter system to filter the pressure-induced venting of gas from the battery cell compartment resulting from a thermal runaway event at a battery cell of the one or more battery cells within the battery cell compartment, and the filter system including a filter material disposed within the battery cell compartment configured as molecular gas sieves to filter, at least in part, the gas resulting from the thermal runaway event at the battery cell, the filter material being shaped as a plurality of beads which are dispersed through the battery cell compartment and fill available space within the battery cell compartment, surrounding the one or more battery cells within the battery cell compartment.
Dependencies are inferred from the claim text.