Abstract: A high power density battery pack for a solar-electric vehicle includes a frame with compartments for battery modules arranged therein. The modules are in thermal communication with a unitary cooling plate disposed underneath. The modules include an array of secondary cells arranged in bottom and top carriers. The bottoms of the cells are in thermal communication with a heat spreader. The cells are oriented with their electrodes in a common plane and electrically isolated by the top carrier. One or more potting materials fills the interstitial spaces between the cells. The cells are connected in parallel and series by interconnects. A module monitoring system tracks the voltage and temperature of the modules. Modules are connected in series by intra-row and inter-row interconnects. A battery management system provides a solar charging mode for both stationary and in-motion vehicle operation, and a low-power quiescent mode when the vehicle is powered down.

Abstract: A system for detecting three-dimensional (3D) part drag includes an infrared image capture device to capture a plurality of thermal images of a 3D part build region of a 3D printing device on which a part is built, and an image analysis module to detect drag of the part based on a difference image produced by subtracting a first thermal image from a second thermal image.

Abstract: A grazing light system for detecting three-dimensional (3D) Additive Manufacturing Device (3D) part lift and drag may include a grazing light directed along an x, y plane of a build region to illuminate the surface of the build region, an image capture device to capture an image of the build region as illuminated by the grazing light, and an image analysis module to detect protrusions of the part along the x, y plane based on variations of luminance information within data representing the image.

Abstract: A system for detecting three-dimensional (3D) part drag includes a layer deposition device, and a sensor to detect a change in a process parameter associated with the operation of the layer deposition device within a 3D part build region of a 3D printing device on which a part is built, the change in a process parameter indicating part drag.

Abstract: A system for detecting three-dimensional (3D) part drag includes an infrared image capture device to capture a plurality of thermal images of a 3D part build region of a 3D printing device on which a part is built, and an image analysis module to detect drag of the part based on a difference image produced by subtracting a first thermal image from a second thermal image.

Abstract: An example build material spreader for a three-dimensional (3D) object printer has a spreader surface to contact a build material and spread the build material in a build material layer by translating the build material spreader through a bed of the build material to shear the build material and form a smooth exposed surface of the build material layer. The spreader surface has a surface energy less than a maximum surface energy.