Abstract: Provided is a storage for used battery units capable of economically storing a plurality of used battery units of various manufacturers while suppressing the deterioration of the used battery units during storage. The storage for used battery units includes: a selection unit that selects a discharge target battery unit and a charge target battery unit from among the plurality of used battery units on the basis of the current values and the voltage values of the plurality of used battery units in storage and the predetermined SOC range of each of the plurality of used battery units; and a charge/discharge control unit which causes a discharge target battery unit to be discharged and charges the discharged power into a charge target battery unit such that the SOCs of the discharge target battery unit and the charge target battery unit reach a predetermined SOC range.

Abstract: A device is capable of evaluating the degree of deterioration of a secondary battery by executing regression analysis processing using, as a target variable, the degree of deterioration of the secondary battery. Multiple regression analysis is executed by using, as explanatory variables, respective values of plural model parameters that define a secondary battery model based on a measurement result of complex impedance of each reference secondary battery, and a degree of deterioration evaluated according to the secondary battery model as a target variable. Then, a degree of deterioration of a target secondary battery is evaluated according to a multiple regression equation obtained as a result of the multiple regression analysis.

Abstract: Provided is a secondary battery inspection device capable of improving inspection accuracy while simplifying the inspection of a secondary battery. Value of a model parameter of a secondary battery model is identitied based on a sampling period T. In the secondary battery model, impedance of internal resistance of a secondary battery 2(0) is expressed by an IIR transfer function and an FIR transfer function. When impulse current I(t) is input to a specified model as the secondary battery model the value of the model parameter of which is identified, a model output voltage as a voltage change form output from the specified model is estimated. The performance of the secondary battery 200 according to the sampling period T is evaluated based on the measurement result of the voltage of the secondary battery 200 when the impulse current I(t) flows into the secondary battery 200, and the specified model output voltage.

Abstract: Provided is a storage for used battery units capable of economically storing a plurality of used battery units of various manufacturers while suppressing the deterioration of the used battery units during storage. The storage for used battery units includes: a selection unit that selects a discharge target battery unit and a charge target battery unit from among the plurality of used battery units on the basis of the current values and the voltage values of the plurality of used battery units in storage and the predetermined SOC range of each of the plurality of used battery units; and a charge/discharge control unit which causes a discharge target battery unit to be discharged and charges the discharged power into a charge target battery unit such that the SOCs of the discharge target battery unit and the charge target battery unit reach a predetermined SOC range.

Abstract: Provided is a battery recycling support system capable of determining an application of a battery and efficiently supporting reuse of the battery. The battery recycle support system includes: a recognition unit configured to recognize a degradation state of a battery; a storage unit configured to store application information indicating an application of the battery according to the degradation state of the battery, a determination unit configured to determine the application of the battery, based on the degradation state of the battery and the application information; and an output unit configured to output a determination result of the determination unit.

Abstract: An aspect of a capacitor comprises an exterior package case housing an electrolyte along with a capacitor element, a sealing plate where an external terminal is disposed, the sealing plate sealing the exterior package case, a current collecting plate disposed between an electrode protruding portion formed on an element end surface of the capacitor element and the external terminal, a gas releasing mechanism disposed in the sealing plate to release a gas in the exterior package case, and a blocking mechanism disposed on at least one of the sealing plate and the current collecting plate to block the electrolyte from the gas releasing mechanism.

Abstract: An aspect of a capacitor comprises an exterior package case housing an electrolyte along with a capacitor element, a sealing plate where an external terminal is disposed, the sealing plate sealing the exterior package case, a current collecting plate disposed between an electrode protruding portion formed on an element end surface of the capacitor element and the external terminal, a gas releasing mechanism disposed in the sealing plate to release a gas in the exterior package case, and a blocking mechanism disposed on at least one of the sealing plate and the current collecting plate to block the electrolyte from the gas releasing mechanism.

Abstract: An insulated gate field effect transistor configured to reduce the occurrence of a short-circuit fault, and a method of manufacturing the insulated gate field effect transistor are provided. A FET includes a semiconductor substrate, a gate insulator, a gate electrode, and a conductive member. The semiconductor substrate has an insulation groove that splits a channel region into a first channel region on a drain region side and a second channel region on a source region side. The conductive member is supported by a drain-side end face and a source-side end face of the insulation groove. When the temperature of the conductive member is equal to or higher than a predetermined temperature, the conductive member is cut.

Abstract: An insulated gate field effect transistor configured to reduce the occurrence of a short-circuit fault, and a method of manufacturing the insulated gate field effect transistor are provided. A FET includes a semiconductor substrate, a gate insulator, a gate electrode, and a conductive member. The semiconductor substrate has an insulation groove that splits a channel region into a first channel region on a drain region side and a second channel region on a source region side. The conductive member is supported by a drain-side end face and a source-side end face of the insulation groove. When the temperature of the conductive member is equal to or higher than a predetermined temperature, the conductive member is cut.

Abstract: A method of producing an electrode plate used for a lithium secondary battery and a lithium secondary battery containing such an electrode plate. The electrode plate is produced by coating a coating slurry of an active material mixture agent added with oxalic acid on a collector, drying and pressing, so as to obtain an electrode plate improved in charge-discharge cycle characteristics when used in a lithium secondary battery.

Abstract: A carbon material composed of a layer structure and a turbostratic structure obtained by subjecting fluid coke to a graphitizing treatment is used as an active material for the negative electrode of a lithium secondary battery. The burning temperature in the graphitizing of the fluid code is preferably more than 2000.degree. C., and more preferably is more than 2500.degree. C. A lithium secondary battery using the above-mentioned active material for the negative electrode thereof is excellent in flatness of the electric potential and also has decreased capacity loss at the initial stage of charge and discharge cycles.

Abstract: A heat exchanger is provided in an air conditioner, refrigerator or the like, and is provided for the indirect transmission and reception of heat between fluids. The heat exchanger comprises a plurality of flat plate fins which are arranged parallel to one another at predetermined intervals so as to allow air stream to flow therebetween, and a plurality of heat transfer tubes passing through the flat plate fins for allowing a fluid to flow therethrough. Each fin is provided with a number of groups of air vents arranged to cross the wake side of the air stream. Each of the air vents is defined by a slat having four sides in which two sides, facing the air stream, are opened and other two sides are provided with leg portions for connecting the slat with the fin. The leg portions are aligned with each other and are inclined with respect to the normal line of the leading edge of the fin.

Abstract: A method of manufacturing a fin-tube heat exchanger which includes a multiplicity of plate fins arranged in a plurality of rows disposed at a predetermined pitch in the direction of air flow, and a jointless refrigerant pipe extending through the plate fins in a zigzag manner. Pipe-receiving holes are formed in each plate fin in an offset manner relative to the center of the plate fin. The plate fins are then placed in fin-receiving grooves formed in a straight fin positioning fixture at predetermined spacings such that the same longitudinal ends of the plate fins of alternating rows appear on the same side of the fin positioning fixture and such that the pipe-receiving holes are linearly aligned. The refrigerant pipe is inserted into the pipe-receiving holes and is expanded to make tight and close contact with the plate fins.