Abstract: A negative electrode active material composite particle according to one embodiment is a composite particle for a negative electrode active material, the composite particle including: a lithium silicate phase; silicon particles dispersed in the lithium silicate phase; and a resin-calcined material. The resin-calcined material containing at least one element selected from F and N. The composite particle has a porosity of 10% or less, for example, and the content of the resin-calcined material is 1-20% by mass with respect to the mass of the composite particle.

Abstract: A negative electrode for nonaqueous electrolyte secondary batteries therein a negative electrode mixture layer comprises a lower layer that is formed on the negative electrode core body side and an upper layer that is formed on the front surface side of the negative electrode mixture layer. Graphite particles contain: first graphite particles which have a circularity of less than 0.92; and second graphite particles which have a higher circularity than the first graphite particles. The ratio of the breaking strength of the first graphite particles to the breaking strength of the second graphite particles is 2 to 5. The content ratio of the first graphite particles relative to the graphite particles in the upper layer is 30% by mass or more, and is higher than the content ratio of the first graphite particles relative to the graphite particles in the lower layer.

Abstract: A cylindrical battery comprises: an outer can having a bottomed cylinder shape; an electrode body that is accommodated inside the outer can, and in which an elongated positive electrode and an elongated negative electrode having different polarities from each other are wound with a separator interposed therebetween; a metal plate that is disposed between the electrode body and a bottom part of the outer can; and a plurality of negative electrode lead parts that extend from the negative electrode towards the bottom part. A tip part of each negative electrode lead part is sandwiched between the metal plate and the bottom part, and is electrically connected to the bottom part.

Abstract: This nonaqueous electrolyte secondary battery comprises: an electrode body which is obtained by winding a positive electrode and a negative electrode, with a separator being interposed therebetween; a nonaqueous electrolyte; and an outer case for housing the electrode body and the nonaqueous electrolyte. The negative electrode comprises a first negative electrode active material and a second negative electrode active material that has a greater expansion coefficient than the first negative electrode active material during charging; and if the proportion of the mass of the second negative electrode active material with respect to the total mass of the first negative electrode active material and the second negative electrode active material is defined as the second negative electrode active material ratio, the second negative electrode active material ratio at the outer winding end is smaller than the second negative electrode active material ratio at the inner winding end.

Abstract: The present disclosure provides a portable standby starting device for a vehicle. The portable standby starting device includes a battery circuit, a load access detecting circuit, and a vehicle starting circuit, wherein the battery circuit is coupled to the load access detecting circuit and the vehicle starting circuit, and is configured to supply power to the load access detecting circuit and the vehicle starting circuit; the load access detecting circuit is coupled to the vehicle starting circuit, and is configured to detect whether the vehicle starting circuit is connected to a vehicle load; the vehicle starting circuit is configured to, when the load access detecting circuit detects the connection of the vehicle load, output a vehicle starting current for controlling an ignition operation performed for the vehicle.

Abstract: A non-aqueous electrolyte secondary battery that is one aspect of the present disclosure is provided with a positive electrode, a negative electrode, and a non-aqueous electrolyte, the positive electrode having a positive electrode current collector and a positive electrode mixture layer that contains a positive electrode active material and that is formed on the surface of the positive electrode current collector, the positive electrode active material including a lithium-containing composite oxide represented by a prescribed general formula, the lithium-containing composite oxide having secondary particles formed by aggregation of primary particles, Ca being present on the surfaces and in the interiors of the secondary particles, and the proportion of Ca present on the surfaces of the secondary particles being 12-58% relative to the total amount of Ca present on the surfaces and in the interiors of the secondary particles.

Abstract: An electrode mixture including an electrode active material, a conductive fibrous carbon material, and inorganic nanoparticles applied to a surface of the electrode active material. The conductive fibrous carbon material contains magnetic metal. A ratio of coverage of the inorganic nanoparticles covering the surface of the electrode active material to content of the magnetic metal contained in the conductive fibrous carbon material is 38.5 or less.

Abstract: An electrode body includes a stack of a negative electrode plate, a positive electrode plate, and a separator in which the separator is arranged between the negative electrode plate and the positive electrode plate. The positive electrode plate has a positive electrode density of 3.0 g/cm3 or less. The negative electrode plate has a negative electrode density of 1.3 g/cm3 or less. A ratio of a specific surface area of the positive electrode plate to a specific surface area of the negative electrode plate is 0.7 or greater.

Abstract: A cylindrical battery having a bottomed tubular exterior can; an electrode body in the exterior can and around which a long positive electrode and a long negative electrode are wound with a separator therebetween; a plurality of negative-electrode lead parts extending from a long negative-electrode current collector of the negative electrode toward the bottom part of the exterior can; a first current-collector plate that is disposed on the bottom part side of the electrode body and that has at least two through-holes at the positions different from each other in the radial direction; and a second current-collector plate disposed between the first current-collector plate and the bottom part. The negative-electrode lead parts each pass through any one of the through-holes. Leading-end portions of the plurality of negative-electrode lead parts are sandwiched between the first current-collector plate and the second current-collector plate, and are electrically connected to the second current-collector plate.

Abstract: Disclosed are an AC side anti-backflow control method and a terminal. The method includes: obtaining an electrical parameter of an intelligent microgrid; and calculating a correction coefficient according to the electrical parameter, and performing correction and control on power of a battery system side of the intelligent microgrid according to the correction coefficient. By utilizing the correction coefficient, it is ensured that the battery system side operates on the basis of an originally set power, and it is also ensured that when the power of the battery system side in a time segmented configuration changes, an adjustment power that collects power feedback in real-time changes following the power of the battery system side in the time segmented configuration.

Abstract: Disclosed is a battery system, including several parallel-connected battery clusters, each battery cluster being connected to a power conversion system via a battery bus, and any one of battery clusters includes several series-connected battery packs; pack equalizers, corresponding to the battery packs on a one-to-one basis, a first end of the pack equalizer being connected to two ends of a corresponding battery pack, and a second end thereof being connected to a power source; and a cluster equalizer, a first end of the cluster equalizer being connected in series to the battery packs, and a second end thereof being connected to the power source. According to the battery system, the pack equalizer is used between the battery packs to regulate the equalization of the battery packs in each cluster; in addition, each battery cluster is connected to the cluster equalizer to realize equalization regulation of the battery cluster.

Abstract: Battery block is battery block that includes: a plurality of battery blocks in which a plurality of battery cells is arranged by holder at fixed positions and the battery cells are connected by lead plate; and circuit board that fixes battery blocks. Battery blocks have terminal parts to be connected to circuit board at the same position. Circuit board has connection parts to be connected to terminal parts of battery blocks. By coupling terminal parts of battery blocks to connection parts of circuit board, battery blocks are connected in series or in parallel, and battery blocks are coupled via circuit board.

Abstract: An object of the present disclosure is to provide a nonaqueous electrolyte secondary battery separator which has high heat resistance and is resistant to the detachment of a heat resistant layer. A nonaqueous electrolyte secondary battery according to an example embodiment includes a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode. The separator includes a polyolefin substrate and a heat resistant layer disposed on a side of the substrate. The heat resistant layer includes an aramid resin, and the aramid resin has a ratio (B/A) of 0.94 to 1.14 wherein A is the absorbance at a wavelength of 1318 cm?1 and B is the absorbance at a wavelength of 1650 cm?1 in an infrared absorption spectrum obtained by infrared spectroscopic measurement.

Abstract: A hyperspectral imaging method includes: providing time-domain synchronous mid-infrared ultrashort pulse and near-infrared ultrashort pulse as pump light and signal light, respectively; subjecting the signal light to optical time-stretching to broaden a pulse width of the signal light; directing the time-stretched signal light to a target sample to be detected; directing the pump light to a time delayer to adjust the time when the pump light reaches a silicon-based camera; spatially combining the time-stretched signal light from the target sample with the pump light from the time delayer; directing combined light to a silicon-based camera where the signal light is detected through non-degenerate two-photon absorption of the signal light under the action of the pump light to acquire hyperspectral imaging data; and obtaining an image of the target sample based on the hyperspectral imaging data.

Abstract: The present invention relates to a method for metallizing a front electrode of an N-type solar cell, including: treating an N-type crystalline silicon substrate to form a p+ doped region and a front surface passivation anti-reflection coating on a front surface of the N-type crystalline silicon substrate in an inside-out sequence, printing an aluminum paste on the front surface passivation anti-reflection coating to form a first finger, overprinting a silver paste on the first finger to form a second finger, and printing a front silver paste on the first finger to form a busbar. In the present invention, the superposition of the second finger on the first finger can reduce line resistance while ensuring a good ohmic contact, which further improves the photoelectric conversion efficiency of solar cells. Moreover, since no grooving procedure is required, the process is simplified and cost-efficient.