Abstract: A battery includes: an electrode body; a current collector terminal; and a laminate film. An outer edge of the current collector terminal is located on an inner side of an outer edge of the electrode body. The laminate film is disposed so as to cover surfaces constituting the outer edges of the current collector terminal and the electrode body. A welded portion in which inner surfaces of the laminate film are welded to each other is disposed at a corner portion of the current collector terminal. The laminate film includes at least a metal layer. In the welded portion, a first resin layer is disposed between the metal layers facing each other. A second resin layer is disposed between the metal layer and the current collector terminal. A thickness of the first resin layer Ta and a thickness of the second resin layer Tb satisfy 0.25?Ta/Tb.

Abstract: A battery includes an electrode body, a current collector terminal disposed on a side surface portion of the electrode body, and a laminate film covering the electrode body. The electrode body includes a current collector tab connected to the current collector terminal. When the battery is viewed from the current collector terminal side, the outer edge of the current collector terminal is located inside the outer edge of the electrode body. The laminate film is disposed to cover surfaces constituting the outer edge of the current collector terminal and the outer edge of the electrode body. A predetermined fused portion in which inner surfaces of the laminate film, which has a predetermined inclined surface continuously formed from the first surface at a position adjacent to an electrode body side end portion of the fused portion, are fused together is disposed at a corner portion of the current collector terminal.

Abstract: The present disclosure solves the problem by providing a battery including: an electrode body; a current collection terminal disposed at a side surface portion of the electrode body; and a laminate film covering the electrode body and the current collection terminal, in which: the electrode body includes a current collection tab; the current collection tab and the current collection terminal are electrically connected; the laminate film includes a metal layer and an inner resin layer closer to the current collection terminal than the metal layer is; the current collection terminal includes a base portion and a porous portion closer to the laminate film than the base portion is; a resin layer including the inner resin layer is disposed between the base portion and the metal layer; the porous portion and the resin layer contact; and at least a part of the resin layer fills the interior of the porous portion.

Abstract: A main object of the present disclosure is to provide a battery in which degrade in sealing performance is suppressed. The present disclosure achieves the object by providing a battery including: an electrode body; a side surface member arranged in a side surface part of the electrode body; and a laminate film that covers the electrode body, wherein; when the battery is viewed from a side surface of the side surface member, an outer periphery of the side surface member is positioned in inner side on the basis of an outer periphery of the electrode body; the laminate film is arranged to cover a surface configuring the outer periphery of the side surface member and a surface configuring the outer periphery of the electrode body; and on the side surface member, a fused part, in which inner surfaces of the laminate film are fused, is arranged.

Abstract: A method for manufacturing a battery includes: a placing step of placing a resin layer along at least one surface in a thickness direction of a current collector terminal; an enclosing step of enclosing the power generation element in an outer body; and a sealing step of sealing the power generation element inside the outer body. The current collector terminal includes a flat terminal portion and a tilted terminal portion. The resin layer includes a flat resin layer portion and a tilted resin layer portion. In the placing step, the resin layer is placed on the current collector terminal such that ?1>?2 is satisfied, where ?1 is an angle between the flat terminal portion and a straight line extended from the tilted terminal portion, and ?2 is an angle between the flat resin layer portion and a straight line extended from the tilted resin layer portion.

Abstract: Provided is a secondary battery having a structure that can reduce a space for the secondary battery. The secondary battery includes: exterior bodies that look a quadrilateral as a whole in a plan view; an electrode body that is housed in the exterior bodies; cutout parts at respective two sides among the sides of the quadrilateral, the two sides being opposite to each other; a cathode terminal disposed in one of the cutout parts; and an anode terminal disposed in another one of the cutout parts.

Abstract: The present disclosure is directed to a laminate-type outer package to be used for a battery, the outer package including a convex structure including a space to seal a power generating element. The convex structure includes a top surface. The top surface includes a first side, a second side that extends to a direction crossing to the first side, and a connection part that connects the first side and the second side. The outer package includes a first extension part that extends from a first crossing part where the connection part and the first side are crossed, a second extension part that extends from a second crossing part where the connection part and the second side are crossed, and an extension crossing part that connects the first extension part and the second extension part. The extension crossing part is in a position lower than that of the top surface in a thickness direction.

Abstract: In a piezoelectric electroacoustic transducing device which is to be incorporated in an electronic apparatus such as a portable telephone, and which is used as a sound source, the sound pressure of the low-frequency range is improved, the productivity is improved, and acoustic characteristics are stabilized. A piezoelectric electroacoustic transducing device 10 has: a frame 15; a piezoelectric vibrator 11 in which piezoelectric elements 12A, 12B are bonded to a metal plate 13; and a plate- and ring-like support member 14 which supports a peripheral portion of the piezoelectric vibrator 11 on the frame 15. A step 14C corresponding to the thickness of the metal plate 13 is disposed in the support member 14, and the metal plate 13 is adhered to the inside of the step 14C in an embedded manner.

Abstract: In the speaker of the invention, a circular outer magnet type magnetic circuit 8, and a diaphragm 13 to which a circular voice coil 14 driven by the circuit is fixed are held on a rectangular frame 1. The circular outer magnet type magnetic circuit 8 is configured by: a yoke 9 in which a rectangular flange 9b is disposed in one end of a circular center pole 9a; a plate-like magnet 10 which has a circular center hole 10a, which is placed with forming a circular annular gap around the yoke center pole 9a, and which has a rectangular outer shape that is substantially identical with the outer shape of the yoke flange 9b; and a circular annular pole piece 11 which is substantially equal in inner diameter to the magnet center hole 10a, in which the outer diameter is substantially equal to short side dimensions of the yoke flange 9b and the magnet 10, and which cooperates with the yoke flange 9b to clampingly hold the magnet 10.

Abstract: In order to simultaneously realize both improvements of the acoustic performance of a bimorph piezoelectric electroacoustic transducing device and the productivity, in a bimorph piezoelectric vibrator 10 in which a disk-like first piezoelectric element 12 is bonded to a first principal surface 11a of a metal plate 11, and a disk-like second piezoelectric element 13 is bonded to a second principal surface 11b of the metal plate 11, the diameter R1 of the first piezoelectric element 12 is different from the diameter R2 of the second piezoelectric element 13. Furthermore, the diameter R2 of the second piezoelectric element 13 is made smaller than the diameter R1 of the first disk-like piezoelectric element 12, and a lead-wire soldering portion 14 is ensured on the second principal surface 11b of the metal plate 11 which is in the periphery of the second piezoelectric element 13.

Abstract: In order to improve the sound pressure level and the sound quality of a piezoelectric electroacoustic transducing device without impairing the size, the productivity, the cost, and the like of the device, the piezoelectric electroacoustic transducing device 1 has: a frame 20; a piezoelectric vibrator 10 in which piezoelectric elements 12, 13 are bonded to a metal plate 11; and a support member 30 which supports a peripheral portion of the piezoelectric vibrator 10 on the frame 20, and which is made of a resin film such as a ring-like PET resin, and a mesh or embossed concave and convex structure is formed on the surface of the support member 30. While maintaining the external shape of the support member 30, the support member 30 is provided with a flexibility at which a large displacement of the piezoelectric vibrator 10 is not impeded.

Abstract: In order to improve the sound pressure level and the sound quality of a piezoelectric electroacoustic transducing device without impairing the size, the productivity, the cost, and the like of the device, the piezoelectric electroacoustic transducing device 1 has: a frame 20; a piezoelectric vibrator 10 in which piezoelectric elements 12, 13 are bonded to a metal plate 11; and a support member 30 which supports a peripheral portion of the piezoelectric vibrator 10 on the frame 20, and which is made of a resin film such as a ring-like PET resin, and a mesh or embossed concave and convex structure is formed on the surface of the support member 30. While maintaining the external shape of the support member 30, the support member 30 is provided with a flexibility at which a large displacement of the piezoelectric vibrator 10 is not impeded.

Abstract: In a piezoelectric electroacoustic transducing device which is to be incorporated in an electronic apparatus such as a portable telephone, and which is used as a sound source, the sound pressure of the low-frequency range is improved, the productivity is improved, and acoustic characteristics are stabilized. A piezoelectric electroacoustic transducing device 10 has: a frame 15; a piezoelectric vibrator 11 in which piezoelectric elements 12A, 12B are bonded to a metal plate 13; and a plate- and ring-like support member 14 which supports a peripheral portion of the piezoelectric vibrator 11 on the frame 15. A step 14C corresponding to the thickness of the metal plate 13 is disposed in the support member 14, and the metal plate 13 is adhered to the inside of the step 14C in an embedded manner.

Abstract: In order to simultaneously realize both improvements of the acoustic performance of a bimorph piezoelectric electroacoustic transducing device and the productivity, in a bimorph piezoelectric vibrator 10 in which a disk-like first piezoelectric element 12 is bonded to a first principal surface 11a of a metal plate 11, and a disk-like second piezoelectric element 13 is bonded to a second principal surface 11b of the metal plate 11, the diameter R1 of the first piezoelectric element 12 is different from the diameter R2 of the second piezoelectric element 13. Furthermore, the diameter R2 of the second piezoelectric element 13 is made smaller than the diameter R1 of the first disk-like piezoelectric element 12, and a lead-wire soldering portion 14 is ensured on the second principal surface 11b of the metal plate 11 which is in the periphery of the second piezoelectric element 13.

Abstract: In the speaker of the invention, a circular outer magnet type magnetic circuit 8, and a diaphragm 13 to which a circular voice coil 14 driven by the circuit is fixed are held on a rectangular frame 1. The circular outer magnet type magnetic circuit 8 is configured by: a yoke 9 in which a rectangular flange 9b is disposed in one end of a circular center pole 9a; a plate-like magnet 10 which has a circular center hole 10a, which is placed with forming a circular annular gap around the yoke center pole 9a, and which has a rectangular outer shape that is substantially identical with the outer shape of the yoke flange 9b; and a circular annular pole piece 11 which is substantially equal in inner diameter to the magnet center hole 10a, in which the outer diameter is substantially equal to short side dimensions of the yoke flange 9b and the magnet 10, and which cooperates with the yoke flange 9b to clampingly hold the magnet 10.