摘要:
A control device of a secondary battery has a current detection unit (103) that detects a charge current to the secondary battery (101) and a discharge current from the secondary battery (101); a calculation unit (107) that calculates, from the charge current and the discharge current, a charge-discharge efficiency and a discharge-charge efficiency when performing a charge operation and a discharge operation; a deterioration judgment unit (107) that judges a deterioration state of the secondary battery (101) from a temporal change rate of the charge-discharge efficiency and a temporal change rate of the discharge-charge efficiency; and a control unit (107) that sets a charge termination voltage of the secondary battery (101) in accordance with the deterioration state.
摘要:
A reflow furnace comprises: a carrier device to carry a printed circuit board with electronic components mounted thereon; a heating chamber to heat through an ambient gas the printed circuit board carried therein to solder the electronic components on a surface of the printed circuit board; and an ambient gas purification equipment including a retrieving device to retrieve a part of the ambient gas containing vaporized flux component when soldering, a heating device to heat the retrieved ambient gas to a desired temperature, an oxidation catalyst to burn the flux component contained in the heated ambient gas, and a returning device to return a high temperature gas after being burned to the heating chamber.
摘要:
A lead-free piezoelectric ceramic composition mainly includes a first crystal phase (KNN phase) and a second crystal phase (NTK phase). In the first crystal phase (KNN phase), a plurality of crystal grains formed of an alkali niobate/tantalate perovskite oxide having piezoelectric characteristics is bound to each other in a deposited state. The second crystal phase (NTK phase) is formed of a compound containing titanium (Ti) and fills spaces between the crystal grains in the first crystal phase.
摘要:
A lead-free piezoelectric ceramic composition includes a first crystal phase of alkali niobate/tantalate type perovskite oxide having piezoelectric properties and a second crystal phase of A-Ti—B—O composite oxide (where the element A is an alkali metal; the element B is at least one of Nb and Ta; and the contents of the element A, the element B and Ti are not zero). Examples of the second crystal phase are those represented by A1−xTi1−xB1+xO5, and x preferably satisfies 0≦x≦0.15.
摘要:
The present invention provides a piezoelectric ceramic composition having a high thermal resistance and a high piezoelectric distortion constant and a piezoelectric element using the piezoelectric ceramic composition. The piezoelectric ceramic composition of the present invention contains Na, Bi, Ti, Cr and O, wherein the content ratio of Na, Bi, Ti and Cr in terms of oxides thereof falls within the following composition range: aNa2O-bBi2O3-cTiO2-dCrO3/2 where a, b, c and d are mole fractions; 0.030≦a≦0.042; 0.330≦b≦0.370; 0.580≦c≦0.620; 0
摘要翻译:本发明提供一种具有高热阻和高压电变形常数的压电陶瓷组合物和使用压电陶瓷组合物的压电元件。 本发明的压电陶瓷组合物含有Na,Bi,Ti,Cr和O,其中Na,Bi,Ti和Cr的氧化物含量在下列组成范围内:aNa 2 O-b B 2 O 3 -cTiO 2 -d dO 3 / 2其中a,b,c和d是摩尔分数; 0.030≦̸ a≦̸ 0.042; 0.330≦̸ b≦̸ 0.370; 0.580≦̸ c≦̸ 0.620; 0
摘要:
A lead-free piezoelectric ceramic composition mainly includes a first crystal phase (KNN phase) and a second crystal phase (NTK phase). In the first crystal phase (KNN phase), a plurality of crystal grains formed of an alkali niobate/tantalate perovskite oxide having piezoelectric characteristics is bound to each other in a deposited state. The second crystal phase (NTK phase) is formed of a compound containing titanium (Ti) and fills spaces between the crystal grains in the first crystal phase.
摘要:
An apparatus for dissolving filth treatment bags formed by hot water soluble films in a dissolving tub is disclosed. The apparatus includes a pipe for inputting hot water for dissolving the filth bag storing filth by stirring action of the hot water therefrom, a pipe for outputting vapor including odor generated by a mixture of the filth and the hot water in the dissolving tub, the vapor being generated on a shifting process from a state where the film is divided and collapsed to a stage where the film is dissolved, and a mechanism for cooling the heated wastewater including the dissolved filth bag and the hot water in the dissolving tub and outputting the wastewater into a sewer pipe from the dissolving tub.
摘要:
A lead-free piezoelectric ceramic composition includes a first crystal phase of alkali niobate/tantalate type perovskite oxide having piezoelectric properties and a second crystal phase of A—Ti—B—O composite oxide (where the element A is an alkali metal; the element B is at least one of Nb and Ta; and the contents of the element A, the element B and Ti are not zero). Examples of the second crystal phase are those represented by A1−xTi1−xB1+xO5, and x preferably satisfies 0≦x≦0.15.
摘要:
The present invention provides a piezoelectric ceramic composition having a high thermal resistance and a high piezoelectric distortion constant and a piezoelectric element using the piezoelectric ceramic composition. The piezoelectric ceramic composition of the present invention contains Na, Bi, Ti, Cr and O, wherein the content ratio of Na, Bi, Ti and Cr in terms of oxides thereof falls within the following composition range: aNa2O-bBi2O3-cTiO2-dCrO where a, b, c and d are mole fractions; 0.030≦a≦0.042; 0.330≦b≦0.370; 0.580≦c≦0.620; 0≦d≦0.017; and a+b+c+d=1. The piezoelectric ceramic composition preferably has a main crystal phase of bismuth layer-structured ferroelectric, more preferably Na0.5Bi4.5Ti4O15 crystal. The piezoelectric element of the present invention includes a piezoelectric body formed of the piezoelectric ceramic composition and at least a pair of electrodes held in contact with the piezoelectric body.
摘要翻译:本发明提供一种具有高热阻和高压电变形常数的压电陶瓷组合物和使用压电陶瓷组合物的压电元件。 本发明的压电陶瓷组合物含有Na,Bi,Ti,Cr和O,其中Na,Bi,Ti和Cr的氧化物含量在下列组成范围内:aNa2O-bBi2O3-cTiO2-dCrO 其中a,b,c和d是摩尔分数; 0.030≦̸ a≦̸ 0.042; 0.330≦̸ b≦̸ 0.370; 0.580≦̸ c≦̸ 0.620; 0≦̸ d≦̸ 0.017; 和a + b + c + d = 1。 压电陶瓷组合物优选具有铋层结构的铁电体的主晶相,更优选为Na 0.5 B 4 4.5 Ti 4 O 15晶体。 本发明的压电元件包括由压电陶瓷组合物形成的压电体和与压电体保持接触的至少一对电极。
摘要:
A reflow furnace comprises: a carrier device to carry a printed circuit board with electronic components mounted thereon; a heating chamber to heat through an ambient gas the printed circuit board carried therein to solder the electronic components on a surface of the printed circuit board; and an ambient gas purification equipment including a retrieving device to retrieve a part of the ambient gas containing vaporized flux component when soldering, a heating device to heat the retrieved ambient gas to a desired temperature, an oxidation catalyst to burn the flux component contained in the heated ambient gas, and a returning device to return a high temperature gas after being burned to the heating chamber.