Abstract: A secondary battery that includes a wound electrode assembly in which a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode are wound about a winding axis; and a current collecting tab at a first end of the wound electrode assembly along a direction of the winding axis, wherein the wound electrode assembly has a separator extension portion in which the separator extends more than the positive electrode and the negative electrode toward a second end of the wound electrode assembly along the direction of the winding axis, the second end being opposite the first end, and the separator has a bent shape that protrudes toward an outer peripheral side of the wound electrode assembly at least at a part of the separator extension portion in a sectional view passing through the winding axis.

Abstract: A battery is provided and including a safety valve, in which the safety valve includes a first metal member positioned on an outer side, a second metal member positioned on an inner side, and an insulating member positioned between the first metal member and the second metal member, the first metal member and the second metal member are connected to each other so as to straddle the insulating member, and the first metal member has a stepped part including a thin portion having a thickness relatively reduced as compared with other portions.

Abstract: A safety mechanism of a battery that includes: a lid; a pressure release member in contact with the lid and constructed to be deformed when an internal pressure of the battery increases; a current shutoff member on a side opposite to the lid with respect to the pressure release member, and connected to the pressure release member so as to shut off a current flowing to the pressure release member when the internal pressure of the battery increases; and an insulating layer between the pressure release member and the current shutoff member. The pressure release member has at least one of groove open toward the current shutoff member, between a position where the pressure release member and the current shutoff member are connected to each other and the pressure release member and the lid are in contact with each other.

Abstract: A safety mechanism of a battery that includes: a lid; a pressure release member in contact with the lid and constructed to be deformed when an internal pressure of the battery increases so as to release a gas inside the battery to an outside of the battery; a current shutoff member on a side opposite to the lid with respect to the pressure release member, and connected to the pressure release member so as to shut off a current flowing to the pressure release member when the internal pressure of the battery increases; and an insulating adhesive layer interposed between the pressure release member and the current shutoff member and bonding the pressure release member to the current shutoff member.

Abstract: An electric tool includes a motor, an impact mechanism, an output shaft, a torque measuring unit, a fastening torque calculating unit, and a control unit. The output shaft receives, from the impact mechanism, rotational impact around an axis. The torque measuring unit measures, as measured torque, torque applied to the output shaft. The fastening torque calculating unit calculates, based on the measured torque measured by the torque measuring unit, fastening torque to be applied to a fastening member. The control unit performs a speed reducing function by changing, according to the fastening torque calculated by the fastening torque calculating unit, the number of revolutions of the motor from a first number of revolutions into a second number of revolutions. The second number of revolutions is smaller than the first number of revolutions.

Abstract: A signal processing apparatus for an electric tool is provided for generating a motor control signal for controlling a motor by performing a smoothing process on a torque value signal from a torque sensor of an electric tool by using a filter. The signal processing apparatus includes a half width detector circuit that detects a half width of the torque value signal; and a calculator circuit that controls a cut-off frequency of the filter to change the cut-off frequency according to a number of hits of the electric tool, based on the detected half width of the torque value signal.

Abstract: A secondary battery that includes a wound electrode assembly in which a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode are wound about a winding axis; and a current collecting tab at a first end of the wound electrode assembly along a direction of the winding axis, wherein the wound electrode assembly has a separator extension portion in which the separator extends more than the positive electrode and the negative electrode toward a second end of the wound electrode assembly along the direction of the winding axis, the second end being opposite the first end, and the separator has a bent shape that protrudes toward an outer peripheral side of the wound electrode assembly at least at a part of the separator extension portion in a sectional view passing through the winding axis.

Abstract: A signal processing apparatus for a tool including a rotating body rotated by impacts delivered from a drive apparatus is provided with: a filter a calculation circuit and a control circuit. The filter receives a torque value signal indicating a torque applied to the rotating body, and filters the torque value signal. The calculation circuit sets a filter coefficient of the filter based on a number of impacts delivered to the rotating body. The control circuit controls the impacts delivered to the rotating body, based on the torque value signal filtered by the filter.

Abstract: A contactless power feeding system includes: a primary circuit for supplying primary power to a power feeding coil; and a primary control circuit for controlling the primary circuit. The primary control circuit acquires, from a secondary control circuit, a secondary measured value and a secondary target value of secondary power received by a power receiving coil. The primary control circuit performs control processing and update processing alternately and repeatedly. The control processing is processing of controlling the primary circuit to bring the primary measured value into conformity with a primary target value. The update processing is processing of updating the primary target value. The update processing includes processing of calculating the primary target value based on transfer efficiency to be determined by the primary measured value and the secondary measured value and on the secondary target value.

Abstract: A signal processing apparatus for an electric tool is provided for generating a motor control signal for controlling a motor by performing a smoothing process on a torque value signal from a torque sensor of an electric tool by using a filter. The signal processing apparatus includes a half width detector circuit that detects a half width of the torque value signal; and a calculator circuit that controls a cut-off frequency of the filter to change the cut-off frequency according to a number of hits of the electric tool, based on the detected half width of the torque value signal.

Abstract: A signal processing apparatus for a tool including a rotating body rotated by impacts delivered from a drive apparatus is provided with: a filter a calculation circuit and a control circuit. The filter receives a torque value signal indicating a torque applied to the rotating body, and filters the torque value signal. The calculation circuit sets a filter coefficient of the filter based on a number of impacts delivered to the rotating body. The control circuit controls the impacts delivered to the rotating body, based on the torque value signal filtered by the filter.

Abstract: A contactless power feeding system includes: a primary circuit for supplying primary power to a power feeding coil; and a primary control circuit for controlling the primary circuit. The primary control circuit acquires, from a secondary control circuit, a secondary measured value and a secondary target value of secondary power received by a power receiving coil. The primary control circuit performs control processing and update processing alternately and repeatedly. The control processing is processing of controlling the primary circuit to bring the primary measured value into conformity with a primary target value. The update processing is processing of updating the primary target value. The update processing includes processing of calculating the primary target value based on transfer efficiency to be determined by the primary measured value and the secondary measured value and on the secondary target value.

Abstract: A control circuit is configured to adjust a phase difference which is a delay of the phase of each of the second drive signals to the phase of each of the first drive signals to a set value within a prescribed range to adjust the magnitude of output power. The control circuit includes an estimator and a setter. The estimator estimates whether an initial mode which is an operation mode of an inverter circuit in the case of a variable capacitance circuit being disabled is a leading phase mode or a lagging phase mode while the variable capacitance circuit is operating. The setter sets the prescribed range in accordance with the initial mode estimated by the estimator.

Abstract: A control circuit controls a plurality of conversion switching elements by first drive signals and a plurality of adjustment switching elements by second drive signals. The control circuit is configured to adjust a phase difference which is a delay of the phase of each of the second drive signals to the phase of each of the first drive signals to a set value within a prescribed range to adjust the magnitude of output power. The prescribed range includes at least one of a range of 270 degrees to 360 degrees and a range of 90 degrees to 180 degrees.

Abstract: A battery includes a multilayer structure including a plurality of multilayer members and an external packaging member configured to cover the multilayer structure. each of the multilayer members includes a positive electrode member provided with a positive electrode current collector and a positive electrode mix layer provided on a surface of the positive electrode current collector, a separator configured to contain an electrolyte, and a negative electrode member including a negative electrode current collector and a negative electrode mix layer provided on a surface of the negative electrode current collector; the positive electrode member, the separator and the negative electrode member are laminated together and the positive electrode mix layer and the negative electrode mix layer face each other; the multilayer members are stacked on each other in such a manner that current collectors having a same polarity face each other.

Abstract: A battery includes an electrode body having a substantially cylindrical shape and an outer package member having a film shape. The outer package member includes a housing portion that has a substantially cylindrical shape and is configured to house the electrode body; and seal portions that are provided on three sides of a periphery of the housing portion excluding a folded portion provided on a first peripheral surface side of the housing portion. At least one of the seal portions provided on an end surface of the housing portion is displaced from a center position of the end surface.

Abstract: A control circuit is configured to adjust a phase difference which is a delay of the phase of each of the second drive signals to the phase of each of the first drive signals to a set value within a prescribed range to adjust the magnitude of output power. The control circuit includes an estimator and a setter. The estimator estimates whether an initial mode which is an operation mode of an inverter circuit in the case of a variable capacitance circuit being disabled is a leading phase mode or a lagging phase mode while the variable capacitance circuit is operating. The setter sets the prescribed range in accordance with the initial mode estimated by the estimator.

Abstract: A control circuit controls a plurality of conversion switching elements by first drive signals and a plurality of adjustment switching elements by second drive signals. The control circuit is configured to adjust a phase difference which is a delay of the phase of each of the second drive signals to the phase of each of the first drive signals to a set value within a prescribed range to adjust the magnitude of output power. The prescribed range includes at least one of a range of 270 degrees to 360 degrees and a range of 90 degrees to 180 degrees.

Abstract: To provide an image processing apparatus which reduces, using a temporal noise removal scheme, image block distortion or noise and temporal flickering and fluctuation phenomena. The image processing apparatus (1) removing noise in an input image by adding a reference image to the input image includes a motion estimation unit (20) which generates motion information indicating a motion estimated for the input image; a motion compensation unit (30) which generates a after motion compensation second image corresponding to a before motion compensation first image by performing motion compensation using the generated motion information; a flatness degree calculation unit (40) which calculates a flatness degree of the input image; a blending rate calculation unit (53) which calculates addition rates for the input image, first image, and second image, using the calculated flatness degree; and a pixel addition unit (60) which adds the respective images according to the addition rates.