Abstract: A battery pack module, for example, is used in an electric or hybrid aircraft. A battery pack module includes: a plurality of battery cells arranged in a battery cell array; a battery management system electrically connected to the battery cell array; an enclosure surrounding the battery cell array; a vent connected to the enclosure and arranged to provide a fluid flow path between an interior of the enclosure and an external environment; a disc arranged to provide a fluid seal between the interior of the enclosure and the vent, the disc configured to rupture upon a pressure differential between the interior of the enclosure and the external environment exceeding a predetermined threshold; and a sensing circuit connected between the disc and the battery management system and configured to provide a signal to the battery management system upon rupture of the disc.

Abstract: The disclosure relates to a battery pack module, for example for use in an electric or hybrid aircraft. Example embodiments include a battery pack module (600) comprising: a plurality of battery cells (6011-n) arranged in a battery cell array (602); an enclosure (604) comprising a plurality of walls surrounding the battery cell array (602); and a vent (605) connected to the enclosure (604) and arranged to provide a fluid flow path between an interior (607) of the enclosure (604) and an external environment (610) upon a pressure differential between the interior (607) of the enclosure (604) and the external environment (610) exceeding a predetermined threshold, wherein the walls of the enclosure (604) are composed of a fire-resistant laminated material comprising a plurality of fabric layers.

Abstract: There is disclosed an energy storage system for an electric aircraft, the energy storage system comprising: at least one battery pack configured to be disposed onboard the aircraft, and a thermal management system. The thermal management system comprises a first circulation loop configured to be disposed onboard the aircraft and configured to contain a first working fluid, the first circulation loop including: a variable speed pump configured to pump the first working fluid around the first circulation loop, a battery heat exchanger configured to provide a thermal interface between the at least one battery pack and the first working fluid, and a controller configured to control operation of the variable speed pump to intermittently pump the first working fluid to distribute heat around the thermal management system.

Abstract: A battery pack includes: a plurality of cylindrical battery cells, each one of the plurality of cells having a cylindrical outer cell wall that extends in a z-direction between opposed first and second ends of the cell; a carrier structure that locates the battery cells relative to one another and arranges them in an array in an x-y plane perpendicular to the z-direction; and a plurality of barriers for preventing propagation of thermal runaway between cells of the array, each one of the plurality of barriers forming a barrier wall that surrounds a group of one or more of the cells. A gap is defined between the barrier wall of each respective barrier and the outer cell wall of each of the respective one or more cells enclosed by the respective barrier.

Abstract: Battery packs, which may be used in vehicles, include: a plurality of battery cells; one or more flow control devices; and sensing and control circuitry configured to: measure one or more parameters indicative of an onset of thermal runaway of one or more of the plurality of cells; determine, based on a change in one or more of the measured parameters, that one or more of the plurality of battery cells has begun or is at risk of beginning thermal runaway; and activate one or more of the flow control devices in response to the determination. Each of the one more flow control devices is configured to, when activated, direct a flow of fluid past one or more of the plurality of cells to cool the cells and/or carry media vented by one or more of the cells following a thermal runaway event away from the one or more cells.

Abstract: A water purification apparatus comprising at least: (a) one or more water purification components to provide a purified water stream, preferably having a conductivity of less than 1 ?S/cm; and (b) a stepper motor (35) to control the dispense of the purified water stream (28) from the water purification apparatus. Stepper motors can provide very fine and accurate control of the dispense of the purified water stream from the water purification apparatus, which control is unaffected by the flow or flow rate of the purified water stream.

Abstract: An implanter provides two-dimensional scanning of a substrate relative to an implant beam so that the beam draws a raster of scan lines on the substrate. The beam current is measured at turnaround points off the substrate and the current value is used to control the subsequent fast scan speed so as to compensate for the effect of any variation in beam current on dose uniformity in the slow scan direction. The scanning may produce a raster of non-intersecting uniformly spaced parallel scan lines and the spacing between the lines is selected to ensure appropriate dose uniformity.

Abstract: A data processing system for settling a bill for items ordered at a restaurant. A set of items for a bill is presented to one or more customers, for which payment is required. User input from one or more customers identifying items from the set of items for payment by a particular person is received to form identified items. Payment is processed for the identified items. The receiving and processing steps are repeated until all items in the set of items for the bill have been identified for payment.