Abstract: The present invention discloses a composite positive electrode material, a positive electrode plate and a preparation method thereof, and a battery. The composite positive electrode material comprises a ternary material (11) and a phase-transition material (12). The phase-transition material (12) undergoes phase transition in the charge/discharge voltage window of the ternary material (11). The ternary material (11) has a single crystal structure, the phase-transition material (12) has a single crystal structure or a poly-crystalline structure, and the phase-transition material (12) is coated on the surface of the ternary material (11). The weight ratio of the ternary material (11) to the phase-transition material (12) is 80:20-99.8:0.2. The ternary material (11) has a nanohardness of 0.001-5 GPa, and the phase-transition material (12) has a nanohardness of 0.01-10 GPa.

Abstract: A strain magnification apparatus can have a first section and a second section coupled with the first section. The second section can have a lower stiffness relative to the first portion and a strain gauge coupled thereto. The first section is operable to be coupled to a tool experiencing strain and the tool is formed from a material having lower elasticity than the second section.

Abstract: A shake correction control device includes a processor that selects mechanical correction of mechanically performing shake correction of a subject image or electronic correction of electronically performing the shake correction of the subject image. The processor performs a switching control from either of the mechanical correction or the electronic correction to the other of the mechanical correction or the electronic correction, and synchronizes shake correction operations of the mechanical correction and the electronic correction during the switching control, and changes an operation ratio of the mechanical correction and the electrical correction during the switching control.

Abstract: Provided is a lithium-ion battery, including a positive electrode plate, a separator, and a negative electrode plate. The separator is arranged between the positive electrode plate and the negative electrode plate. The positive electrode plate includes a positive electrode current collector and a positive electrode active layer laminated in sequence. A positive electrode active material in the positive electrode active layer includes lithium manganese iron phosphate and a ternary material. The negative electrode plate includes a negative electrode current collector and a negative electrode active layer laminated in sequence. The negative electrode active layer includes a composite layer and a lithium replenishing layer. A negative electrode active material in the composite layer includes a carbon material and SiOx. An areal density of lithium in the lithium replenishing layer is m2=a*M1*m1*?*(1??)/M2.

Abstract: A positive electrode active material of a lithium ion battery includes lithium manganese iron phosphate and a ternary material. A negative electrode active material is graphite. The lithium ion battery meets the following formulas: 1.08 ? M 3 * ? 3 * y / M 1 * ? 1 * A 1 + M 2 * ? 2 * A 2 * x ? 1.12 ? and 0.49 ? M 1 * 1 - ? ? 1 * A 1 + M 2 * 1 - ? 2 * A 2 * x / M 3 * 1 ? - ? 3 * y ? 1.

Abstract: An example foldable mobile computing device includes a first side including a first power storage device coupled to a first regulator. The device includes a second side including a second power storage device coupled to a second regulator and connected in parallel with the first power storage device. The second side is configured to articulate relative to the first side about a hinge. The device includes processing circuitry configured to determine a power storage capacity of the first power storage device and to determine a power storage capacity of the second power storage device. The device is also configured to adjust, based on the power storage capacity of the first power storage device and the power storage capacity of the second power storage device, at least one of an impedance of the first regulator or an impedance of the second regulator.

Abstract: Provided is a positive electrode plate, including a current collector and a positive electrode active layer arranged on the current collector. The positive electrode active layer includes m positive electrode active sub-layers. A positive electrode active material in each positive electrode active sub-layer includes a main positive electrode material and an auxiliary positive electrode material. The D50 particle size of the main positive electrode material in the positive electrode active layer satisfies 1/(?{square root over (2)}?1)n?1D501?D50n?n(?{square root over (2)}+1)n?1D501. The D90 particle size of the auxiliary positive electrode material is less than the D10 particle size of the main positive electrode material in a first positive electrode active sub-layer.

Abstract: A positive electrode material includes a first lithium manganese iron phosphate material in an aggregate form, a second and third lithium manganese iron phosphate materials in an aggregate and/or single-crystal-like form, and a fourth and fifth lithium manganese iron phosphate materials in a single-crystal-like form. D505<D504<D503<D502<D501, D502=aD501, D503=bD501, D504=cD501, D505=dD501, and 5 ?m?D501?15 ?m. 0.35?a?0.5, 0.2?b?0.27, 0.17?c?0.18, and 0.15?d?0.16. Molar ratios of manganese to iron in the first, the second, the third and the fourth lithium manganese iron phosphate materials increase sequentially, and a molar ratio of manganese to iron in the fifth lithium manganese iron phosphate material is greater than that in the third lithium manganese iron phosphate material.

Abstract: A blur correction device includes a processor and a memory that is built into or coupled to the processor. The processor is configured to acquire an amount of blur correction used to correct blurring of an image obtained by imaging of an imaging element during exposure for one frame in the imaging element, and correct the blurring by performing image processing based on a most recently acquired amount of blur correction, on an unfinished image that is the image less than one frame that is being read from the imaging element. In a case in which a first reading period does not overlap with a second reading period, the processor corrects the blurring by performing the image processing based on the amount of blur correction acquired during exposure between the first reading period and the second reading period, on the unfinished image of the subsequent frame.

Abstract: A positive electrode material includes a first lithium manganese iron phosphate material in an aggregate form, a second and third lithium manganese iron phosphate materials in an aggregate and/or single-crystal-like form, and a fourth and fifth lithium manganese iron phosphate materials in a single-crystal-like form. A particle quantity ratio of the first to fifth lithium manganese iron phosphate materials is (0.8 to 1.2):(0.8 to 1.2):(1.6 to 2.4):(6.4 to 9.6):(6.4 to 9.6), and particle size D50 relationships satisfy: D505<D504<D503<D502<D501, D502=aD501, D503=bD501, D504=cD501, D505=dD501, and 5 ?m?D501?15 ?m, where 0.35?a?0.5, 0.2?b?0.27, 0.17?c?0.18, and 0.15?d?0.16.

Abstract: Provided are an electrode plate and a lithium-ion battery, the electrode plate includes a current collector layer, a semiconductor layer and an alkali metal replenishing layer. The semiconductor layer is disposed on at least one surface of the current collector layer. The alkali metal replenishing layer is a lithium-replenishing agent layer or a sodium-replenishing agent layer. The alkali metal replenishing layer is arranged on a side of the semiconductor layer far away from the current collector layer.

Abstract: The present disclosure relates to an electrolyte solution for a lithium-ion battery. The electrolyte solution includes an organic solvent, a lithium salt, and an additive. The electrolyte solution provided in the present disclosure includes a 6-membered heterocyclyl carboxylic anhydride additive, and can effectively inhibit gas production and the increase of interface impedance in the battery, improve the high-temperature stability of the battery, and prolong the service life of the battery.

Abstract: A lithium iron phosphate cathode sheet, a preparation method thereof, and a lithium iron phosphate lithium-ion battery are disclosed, wherein the lithium iron phosphate cathode sheet includes lithium iron phosphate particles, and in the lithium iron phosphate particles, in terms of particle number, a percentage of lithium iron phosphate particles with a particle size in the range of 50 nm-500 nm is 70-90%, a percentage of lithium iron phosphate particles with a particle size greater than 500 nm and less than 1000 nm is 5-20%, and a percentage of lithium iron phosphate particles with a particle size in the range of 1 ?m-10 ?m is 2-10%.

Abstract: A shake correction control device includes a processor that selects mechanical correction of mechanically performing shake correction of a subject image or electronic correction of electronically performing the shake correction of the subject image. The processor performs a switching control from either of the mechanical correction or the electronic correction to the other of the mechanical correction or the electronic correction, and synchronizes shake correction operations of the mechanical correction and the electronic correction during the switching control, and changes an operation ratio of the mechanical correction and the electrical correction during the switching control.

Abstract: As a wellbore is extended into a formation, hydrostatic and hydrodynamic pressures change due to variations in drilling mud weight, fluid density, etc. Strain gauges downhole measure forces experienced by drilling equipment. During drilling, a strain gauge measures strain applied between the drill string and the formation. When off bottom, the strain gauge measures forces experienced by the drill string other than drilling forces. A pressure calculator converts off bottom strain gauge measurements into measurements of hydrostatic pressure for periods without fluid flow (i.e., when drilling motors are paused) and into measurements of hydrodynamic pressure for periods with fluid flow (i.e., when mud motors are operating). The pressure calculator correlates strain measurements (usually in voltages) to pressure based on a predetermined relationship for a given wellbore geometry (e.g., hole diameter, drill bit diameter, drill pipe diameter, etc.).

Abstract: A battery pack, a vehicle and an energy storage device. The battery pack includes at least one battery sequence. The battery sequence includes a plurality of batteries. At least one of the batteries includes a casing and a core packaged in the casing. A gap exists between two neighboring batteries. A ratio of the gap to the thickness of the battery is c, and c satisfies the following relational expression: (a?b)<c<(a×t), where a represents an expansion rate of the battery; b represents a compression rate of the core; and t represents a ratio in percentage of a thickness of the battery after effective compression to a thickness of the battery before compression.

Abstract: An electronic package is provided, in which a carrier structure provided with electronic components is disposed onto an antenna structure, where a stepped portion is formed at an edge of the antenna structure, so that a shielding body is arranged along a surface of the stepped portion. Therefore, the shielding body only covers a part of the surface of the antenna structure to prevent the shielding body from interfering with operation of the antenna structure.

Abstract: The present disclosure relates to a lithium-replenishing material, a preparation method thereof, and a lithium-ion battery. The lithium-replenishing material comprises metal lithium particles and conductive material, and the conductive material includes a built-in segment embedded in metal lithium particles and an exposed segment external to metal lithium particles; the electrical conductivity of the conductive material is greater than 100 s/cm.

Abstract: A blur correction device includes a processor and a memory that is built into or coupled to the processor. The processor is configured to acquire an amount of blur correction used to correct blurring of an image obtained by imaging of an imaging element during exposure for one frame in the imaging element, and correct the blurring by performing image processing based on a most recently acquired amount of blur correction, on an unfinished image that is the image less than one frame that is being read from the imaging element. In a case in which a first reading period does not overlap with a second reading period, the processor corrects the blurring by performing the image processing based on the amount of blur correction acquired during exposure between the first reading period and the second reading period, on the unfinished image of the subsequent frame.

Abstract: The disclosed embodiments provide a system for managing a stream-processing application. During operation, the system allocates a first host for an active instance of the stream-processing application that maintains a state during processing of one or more input streams. Next, the system allocates a second host for a first backup instance that recreates the state on the active instance by consuming changes to the state replicated from the active instance without consuming the input stream(s). During a failure on the first host, the system moves the active instance to the first host by stopping the first backup instance on the second host. Finally, the system launches the active instance on the second host to resume processing of the input stream(s) by the active instance using the recreated state from the first backup instance.