Abstract: Provided herein is an electrical storage device that can reduce fluctuations in pressing force applied to different portions of an insulating ring member. Eight projections 19c are integrally provided on a surface of a plate-like portion 19b of an insulating ring member 19, which opposes an annular projected portion 15, to contact the annular projected portion 15. The projections 19c are disposed at constant intervals in the circumferential direction of an axial core 11. The projections 19c are each shaped to extend in the radial direction of the axial core 11, and each have a length to project inwardly of a top portion 15a of the annular projected portion 15 in the radial direction of the axial core 11, being in contact with the annular projected portion 15.

Abstract: Provided herein is a capacitor in which an electrolyte is infiltrated into a wound electrode group faster than conventionally. A negative current collecting member 9 has one slit 57 formed to extend across a protruded portion 49 and a negative current collecting member body (first welding portion) 53 and to penetrate the protruded portion 49 and the negative current collecting member body 53 in a thickness direction. The slit 57 passes through the center of the protruded portion 49, and extends entirely across the protruded portion 49 such that both ends of the slit 57 reach the negative current collecting member body 53.

Abstract: Provided herein is an electrical storage device that can reduce fluctuations in pressing force applied to different portions of an insulating ring member. Eight projections 19c are integrally provided on a surface of a plate-like portion 19b of an insulating ring member 19, which opposes an annular projected portion 15, to contact the annular projected portion 15. The projections 19c are disposed at constant intervals in the circumferential direction of an axial core 11. The projections 19c are each shaped to extend in the radial direction of the axial core 11, and each have a length to project inwardly of a top portion 15a of the annular projected portion 15 in the radial direction of the axial core 11, being in contact with the annular projected portion 15.

Abstract: Provided herein is a capacitor in which an electrolyte is infiltrated into a wound electrode group faster than conventionally. A negative current collecting member 9 has one slit 57 formed to extend across a protruded portion 49 and a negative current collecting member body (first welding portion) 53 and to penetrate the protruded portion 49 and the negative current collecting member body 53 in a thickness direction. The slit 57 passes through the center of the protruded portion 49, and extends entirely across the protruded portion 49 such that both ends of the slit 57 reach the negative current collecting member body 53.

Abstract: A handsfree-call supporting device that is used, connected to a mobile phone through any one of a wired interface and a wireless interface, includes: a casing; a speaker unit; a first microphone unit; and a second microphone unit. The speaker unit includes a speaker device and a sound output unit. The first microphone unit includes a first sound collector unit and a first microphone device. The second microphone unit includes a second sound collector unit and a second microphone device. The speaker unit, the first microphone unit, and the second microphone unit are housed in the casing. A second opening, a third opening, and a fourth opening are arranged on one surface of the casing. The third opening and the fourth opening are arranged at uniform distances from the second opening.

Abstract: A method of manufacturing an electrode group unit for lithium ion capacitor that allows reliable welding between a current collecting member and an electrode and that provides a welded portion with a low resistance is provided. A lithium ion capacitor is also provided. An unapplied portion 25 of a positive electrode 9 and an unapplied portion 33 of a negative electrode 11 are disposed to project outside of separators 13, 15 in directions opposite to each other. The resulting assembly is wound into a swirling shape in cross section about an axial core 7 to form an electrode group 5. A lithium metal support member 17 is disposed on the negative electrode 11 such that a layer in which the lithium metal support member 17 is wound is located in a radially middle region of the electrode group 5.

Abstract: A present invention provide a lithium ion storage device capable of reliably doping a negative active material of a negative plate with lithium ions generated through dissolution of a lithium metal plate disposed in an electrode group. A conductive shielding member includes a current collecting metal foil and a negative active material layer formed on at least one surface of the current collecting metal foil. The conductive shielding member is provided between a lithium metal plate and a positive plate such that the lithium metal plate is sandwiched between the negative plate and the negative active material layer formed on the current collecting metal foil of the conductive shielding member.

Abstract: An electrochemical capacitor that is resistant to vibration is provided. A positive current collecting member 39 is welded to an unapplied portion 25 of a positive electrode 9 included in a wound electrode group 5. An outer peripheral portion 40 of the positive current collecting member 39 is shaped and sized to extend to a position beyond a top portion 3c of an annular projected portion 3a. An insulating ring member 63 is disposed in a compressed state between the positive current collecting member 39 and the annular projected portion 3a and also between the positive current collecting member 39 and the annular projected portion 3a and an annular wall portion 3d of a peripheral wall portion that is continuous with the annular projected portion. This configuration makes it possible to reliably fix an electrode group unit in a container 3 while preventing a short circuit.

Abstract: A method of manufacturing an electrode group unit for lithium ion capacitor that allows reliable welding between a current collecting member and an electrode and that provides a welded portion with a low resistance is provided. A lithium ion capacitor is also provided. An unapplied portion 25 of a positive electrode 9 and an unapplied portion 33 of a negative electrode 11 are disposed to project outside of separators 13, 15 in directions opposite to each other. The resulting assembly is wound into a swirling shape in cross section about an axial core 7 to form an electrode group 5. A lithium metal support member 17 is disposed on the negative electrode 11 such that a layer in which the lithium metal support member 17 is wound is located in a radially middle region of the electrode group 5.

Abstract: A present invention provide a lithium ion storage device capable of reliably doping a negative active material of a negative plate with lithium ions generated through dissolution of a lithium metal plate disposed in an electrode group. A conductive shielding member includes a current collecting metal foil and a negative active material layer formed on at least one surface of the current collecting metal foil. The conductive shielding member is provided between a lithium metal plate and a positive plate such that the lithium metal plate is sandwiched between the negative plate and the negative active material layer formed on the current collecting metal foil of the conductive shielding member.