Abstract: A battery pack that enhances the reliability and coupling force of a connection member electrically connecting two protective circuit boards is disclosed. The battery pack includes: a secondary battery including a positive electrode and a negative electrode; a first protective circuit board electrically connected to the battery; a second protective circuit board electrically connected to the first protective circuit board; and at least one conductive plate coupled to one surface of the first protective circuit board and one surface of the second protective circuit board.

Abstract: A method by which properties of a component (18) formed of a ductile iron alloy and having thick sections can be promoted with an austempering process. The method entails casting a ductile iron alloy containing iron, carbon, silicon and alloying constituents. The casting is solidified at a rate that inhibits segregation of the alloying constituents to grain boundaries of the casting, and so that the casting contains graphite nodules having a count of greater than 100 nodules per mm2. The casting is then austempered by heating to an austenitization temperature to yield a microstructure having a single-phase matrix of austenite that contains carbon, and then quenching the casting to an austempering temperature. The casting is held at the austempering temperature for a duration sufficient to yield a microstructure whose matrix is mostly ausferrite and essentially free of martensite and pearlite.

Abstract: Systems and methods are provided for improved brazing. A system includes a gap filling compound (GFC). The GFC includes a brazing alloy. The system also includes a GFC retention screen. The GFC retention screen configured to be disposed over the GFC to retain the GFC within the gap during brazing. The GFC retention screen is also configured to enable gas to escape from the GFC during brazing.

Abstract: A wind turbine component having a lightweight structure is provided and includes a metallic matrix defining a cavity, metallic foam enclosed within the cavity and a solidification metallurgical bond formed at an entire interface between the metallic matrix and the metallic foam.

Abstract: Methods of forming a compressor article such as a cast airfoil, a stator, a blade, a gas turbine, and a gas turbine shell via casting are presented. The methods include: preparing an iron-manganese-aluminum-silicon-carbon (Fe—Mn—Al—Si—C) based alloy; casting the Fe—Mn—Al—Si—C based alloy, wherein a cast has a shape of the compressor article; and performing post-casting finishing thereby forming the compressor article.

Abstract: A component for wind turbines includes cast austempered ductile iron containing about 3.0 to about 3.8 weight percent carbon, about 1.9 to about 2.8 weight percent silicon, up to about 0.3 weight percent manganese, up to about 0.8 weight percent copper, up to about 2.0 weight percent nickel, up to about 0.3 weight percent molybdenum, about 0.03 to about 0.06 weight percent magnesium, less than about 0.05 weight percent chromium, less than about 0.02 weight percent vanadium, and less than about 0.01 weight percent sulfur. The component is preferably a drive shaft or gearbox component having a mass of more than about 3 tons. A method of manufacturing the component is also provided.

Abstract: A circuit board apparatus of a battery pack in which tape is attached to low priced flexible printed circuit boards (FPCB) so that it is possible to prevent cracks from being generated in the FPCBs when the FPCBs are bent. The circuit board apparatus includes a first board, a second board, and a bendable third board with one side electrically connected to one side of the first board, and the other side electrically connected to one side of the second board. The first board is oblique to the second board, or the first board is substantially perpendicular to the second board. Protective tape is provided on a first region where the first board and the third board overlap, and in a second region where the second board and the third board overlap.

Abstract: A battery pack that prevents a solder material from flowing down due to a tab electrically connecting a battery to a protective circuit board, thereby improving reliability, coupling efficiency, safety, and productivity is disclosed. The battery pack includes: a multi-cell battery having a positive electrode and a negative electrode, in which a plurality of battery cells are electrically connected to each other; a protective circuit board electrically connected to the multi-cell battery and having via holes; a pair of conductive tabs each including an insert portion inserted into a corresponding via hole and a bending portion integrally extending from the insert portion and bent from the insert portion; and a pair of soldering portions each being formed at at least some portions of a corresponding insert portion and a corresponding bending portion.

Abstract: A battery pack that enhances the reliability and coupling force of a connection member electrically connecting two protective circuit boards is disclosed. The battery pack includes: a secondary battery including a positive electrode and a negative electrode; a first protective circuit board electrically connected to the battery; a second protective circuit board electrically connected to the first protective circuit board; and at least one conductive plate coupled to one surface of the first protective circuit board and one surface of the second protective circuit board.

Abstract: A circuit board apparatus of a battery pack in which tape is attached to low priced flexible printed circuit boards (FPCB) so that it is possible to prevent cracks from being generated in the FPCBs when the FPCBs are bent. The circuit board apparatus includes a first board, a second board, and a bendable third board with one side electrically connected to one side of the first board, and the other side electrically connected to one side of the second board. The first board is oblique to the second board, or the first board is substantially perpendicular to the second board. Protective tape is provided on a first region where the first board and the third board overlap, and in a second region where the second board and the third board overlap.