Abstract: A lithium ion battery pack includes a plurality of prismatic lithium polymer cells and one or more graphite heat spreaders. Each spreader has at least two major surfaces and is made of one of a sheet of a compressed mass of exfoliated graphite particles, a graphitized polyimide sheet, or combinations thereof.

Abstract: A battery pack includes a plurality of cell assemblies each of which include one or more prismatic batteries. A frame has legs sized and configured to be positioned around the prismatic batteries. At least one leg includes a rear face, curved outer edge and a side face. A thermal transfer sheet is made from a sheet of a compressed mass of exfoliated graphite particles. Each thermal transfer sheet is positioned to contact the major surface of the at least one prismatic battery and is bent over the curved outer edge. At least a portion of each thermal transfer sheet is secured between a heat sink and the side face.

Abstract: A heat spreader for high volume manufacturing of a heat source, having a heat spreader composition which comprises a heat spreader material, an adhesive thereon, and a release material. The adhesive and release material are selected to prevent delamination of the heat spreader material when the release material is removed during the high volume manufacturing process of heat sources.

Abstract: A lithium ion battery pack includes a plurality of prismatic lithium polymer cells and one or more graphite heat spreaders. Each spreader has at least two major surfaces and is made of one of a sheet of a compressed mass of exfoliated graphite particles, a graphitized polyimide sheet, or combinations thereof.

Abstract: An electronic device having a heat source disposed in direct alignment with a battery for the device and a thermal management system in thermal contact with the heat source. The thermal management system may extend from at least a first surface of the battery to a second surface of the battery. The second surface of the battery may be adjacent a heat dissipation element. The thermal management system may further be in thermal contact with the heat dissipation element. Further a portion of the thermal management system extends along the first and second surfaces of the battery and has a sufficiently high anisotropic ratio to avoid the transfer of heat to the battery to the extent to inhibit the functioning of the battery.

Abstract: A light bulb (10) including an outer housing (12) shaped like a standard Edison light bulb. The interior of the bulb includes a circuit board (24) and one or more LEDs (26). A heat sink (30) is provided inside the bulb housing that draws thermal energy away from the LEDs using graphite based materials.

Abstract: A heat exchanger assembly includes a fluid transfer layer and a first external layer. The fluid transfer layer is made from an elastomeric material and the first external layer includes flexible graphite. The fluid transfer layer includes at least one channel and is configured to form a passage for receiving a thermal transfer fluid between the channel and a portion of the first external layer.

Abstract: A thermal solution for a portable electronic device, which is positioned between a heat source and another component of the electronic device, where the thermal solution facilitates heat dissipation from the heat source while shielding the second component from the heat generated by the heat source.

Abstract: A heat spreader (10) for a display device, such as a plasma display panel, a light emitting diode or a liquid crystal display, comprising at least one sheet of compressed particles of exfoliated graphite having a surface area greater than the surface area of that part of the back surface of the display device where a localized region of higher temperature is generated.

Abstract: A process for preparing a gas permeable flexible graphite sheet is presented. The process includes providing graphite flakes; admixing the graphite flakes with a sacrificial additive to form a graphite mixture; compressing the graphite mixture into a sheet having sacrificial additive dispersed therethrough; and treating the sheet to at least partially remove the sacrificial additive to form a permeable flexible graphite sheet.

Abstract: An improved method enables preparation of articles for a variety of applications, including embossing or otherwise shaping to form a variety of articles. A plurality of thin, preferably resin-impregnated, flexible graphite sheets are arranged to form zones in a composite material having a graded density or other characteristic. Variation of properties between zones in the stock material formed is useful for achieving a desired set of properties in the formation of articles such as those useful in electrochemical fuel cells and double-layer capacitors.

Abstract: Composite electrode/current collectors for capacitors, e.g., a flow-through capacitor or electric double layer capacitor are disclosed. Also disclosed are methods for making a composite electrode/current collectors and capacitors having at least one composite electrode/current collector.

Abstract: An improved method enables preparation of articles for a variety of applications, including embossing or otherwise shaping to form a variety of articles. A plurality of thin, preferably resin-impregnated, flexible graphite sheets are arranged to form zones in a composite material having a graded density or other characteristic. Variation of properties between zones in the stock material formed is useful for achieving a desired set of properties in the formation of articles such as those useful in electrochemical fuel cells and double-layer capacitors.

Abstract: Processes are provided for formation of complex shapes by embossing of a sheet of flexible graphite material. In one approach, a sheet (26) of material is provided with a variable resin concentration across a selected dimension of the sheet, and the position of the variable which will result in thinner areas in the embossed articles. In a second approach, recesses are provided in the embossing rollers (30 and/or 32) to accomodate material flow during embossing. These recesses result in protrusions formed on the articles, which protrusions must then be removed in a machining operation.

Abstract: An isolated thermal interface is presented. The inventive interface includes a flexible graphite sheet having two major surfaces, at least one of the major surfaces coated with a protective coating sufficient to inhibit flaking of the particles of graphite.

Abstract: A thermal solution for equipment containing a heat-generating component, which is positioned between the heat-generating component and an external surface of the equipment, where the thermal solution facilitates heat dissipation from the heat-generating component while shielding the external surface from the heat generated by the heat-generating component.

Abstract: A heat spreader for an emissive display device, such as a plasma display panel or a light emitting diode, comprising at least one sheet of compressed particles of exfoliated graphite having a surface area greater than the surface area of that part of a discharge cell facing the back surface of the device.

Abstract: A heat spreader for an emissive display device, such as a plasma display panel or a light emitting diode, comprising at least one sheet of compressed particles of exfoliated graphite having a surface area greater than the surface area of that part of a discharge cell facing the back surface of the device.

Abstract: The invention presented is a method for applying heat spreaders to a plurality of plasma display panels, including (a) providing a plurality of heat spreader composites, each of which comprises a heat spreader material having an adhesive thereon and a release material positioned such that the adhesive is sandwiched between the heat spreader material and the release material; (b) removing the release material from a plurality of the composites; and (c) applying at least one of the composites to each of the plurality of plasma display panels each such that the adhesive adheres the heat spreader material to the plasma display panel.