Abstract: The invention provides a lithium-ion battery electrode piece and a lithium-ion battery including the same. The electrode piece includes an electrode active material layer disposed on the surface of the current collector and a protective layer disposed on the surface of the electrode active material layer. The protective layer is composed of metal oxide layers and conductive layers alternately stacked in the horizontal direction. The area ratio of the metal oxide layers to the conductive layers is 4:1-1:4, and the thickness ratio is 0.5:1-1:1. According to the invention, by regulating the shape and ratio of the high temperature stability material and the conductive active material on the electrode piece in the process of coating the protective layer, the amount of the two coating materials is precisely controlled to implement the precise regulation of the high temperature stability and rate performance of the electrode piece.

Abstract: The disclosure discloses a battery device, a detection method thereof, a method and device for screening battery cells. The characteristic values are determined according to parameters of two peaks in the frequency-domain impedance diagram. The characteristic values may reflect the magnitude of charge transfer impedance and diffusion impedance in each battery cell, then reflect the characteristics of the interface and characteristics of solid phase particles during charging and discharging, and further reflect the health and performance of battery cells. The battery set screened in this way still have good consistency after storage and shelving, and the consistency between battery cells will not deteriorate after storage for a period of time, so that the battery device may have better performance.

Abstract: A downhole throttling device based on wireless control includes an inlet nozzle, a throttling assembly, an electrical sealing cylinder, a gas guide cylinder, a lower adapter sleeve, an end socket, a female sleeve, and electrical components. The inlet nozzle is connected to the throttling assembly, the throttling assembly is connected to the electrical sealing cylinder and the gas guide cylinder, the electrical sealing cylinder and the gas guide cylinder are both connected to the lower adapter sleeve, the lower adapter sleeve is respectively connected to the end socket and the female sleeve, and the electrical components are arranged in the electrical sealing cylinder. A throttling effect is achieved by detecting the temperature and pressure in a tube by a temperature/pressure sensor in the electrical components and controlling a motor to rotate a movable valve in the throttling assembly by a circuit control assembly, thereby achieving wireless control over downhole throttling.

Abstract: A battery includes a battery body having a body top surface, a body bottom surface, and a body side wall. The body side wall includes two oppositely disposed first side walls. Distance between outer surfaces of the two first side walls is L. First and second positions not coincide with each other are taken on midline of any first side wall, the first position is located in a range of 0 to 10 mm from the body top surface, the second position is located in a range of 0 to 10 mm from the body bottom surface, and distance between the first and second positions is H. Under conditions of ambient temperature being 25° C. and 2C current rate, temperature at first position is T1, temperature at second position is T2, and the battery satisfies (T1?T2)×3L/H?20° C.

Abstract: Embodiments of this application disclose a data protection method and system, a medium, and an electronic device, and belong to the field of communication technologies. In embodiments of this application, a first electronic device establishes a communication connection to a second electronic device. The first electronic device is a trusted device of the second electronic device. When detecting a first trigger condition, the first electronic device sends first data to the second electronic device. The first data is used to trigger the second electronic device to enter a maintenance mode. According to embodiments of this application, the first electronic device triggers the second electronic device to enter the maintenance mode, to protect data of the electronic devices.

Abstract: A state of charge (SOC) determination method and apparatus for a battery system are disclosed. Based on a correspondence between impedance and SOC, a correspondence between OCV and SOC, and an operating current at a previous data collection moment, a correction coefficient at a current data collection moment can be determined. After the SOC estimated at the current data collection moment is corrected based on the correction coefficient, the accumulation of errors in the SOC can be eliminated, and the accuracy of the determined SOC is thereby improved.

Abstract: The present application provides a displaying base plate and a displaying device, which relates to the technical field of displaying. The displaying device can ameliorate the problem of screen greening caused by electrostatic charges, thereby improving the effect of displaying. The displaying base plate includes an active area and a non-active area connected to the active area, the non-active area includes an edge region and a first-dam region, and the first-dam region is located between the active area and the edge region; the displaying base plate further includes: a substrate; an anti-static layer disposed on the substrate, wherein the anti-static layer is located at least within the edge region; and a driving unit and a touch unit that are disposed on the substrate, wherein the driving unit is located within the active area.

Abstract: The invention discloses an electrolyte solution containing lithium salt, an organic solvent, and additives. The additives include vinylene carbonate and 2,6-di-tert-butyl-4-methylphenol; the content of vinylene carbonate accounts for 0.5% to 5% of the total mass of the electrolyte, and the content of 2,6-di-tert-butyl-4-methylphenol accounts for 7*10?4% to 1.6% of the total mass of vinylene carbonate. The electrolyte of the invention can improve the film formation rate and film thickness of vinylene carbonate in the negative electrode, so that the obtained SEI film resistance is smaller, thereby improving the performance of the lithium battery.

Abstract: A switch according to the present invention includes a base including a recessed portion on one surface of the base; a click spring having a dome shape, the click spring being provided at the recessed portion such that the bottom of the recessed portion is contacted at a dome-shaped opening side of the click spring; a cover provided to cover the recessed portion and to house the click spring at the recessed portion; and a strain detecting element attached to another surface of the base. The strain detecting element is configured to detect strain of the base, the strain occurring in accordance with a depression amount of the click spring that is depressed.

Abstract: Provided are a video playing method and apparatus. Wherein the video playing method comprises: performing video-preprocessing on video data to be played and playing the video data obtained after the video-preprocessing by means of a main process of the Web client; in the case that the performance resource of the Web client is insufficient, creating and starting a video service process, wherein the video service process is configured to perform the video-preprocessing on video data to be played and play the video data obtained after the video-preprocessing. In the technical solution according to the embodiment in the present application, the main process of the Web client can play videos without relying on plug-ins. In the case that the performance resource of the Web client is insufficient, the video service process is used to play videos for the smoothness of video playing, which can also play videos without relying on plug-ins.

Abstract: Provided are an array substrate mother board, an array substrate, a display panel and a display device. The array substrate mother board includes array substrates, the array substrate includes a component disposing area; the array substrate includes a base substrate and a drive circuit layer, the drive circuit layer includes a first metal layer, and the first metal layer includes capacitor plates arranged in an array along the first direction and along the second direction; the plurality of array substrates include first-type array substrates, and the plurality of first-type array substrates are arranged along the first direction and are adjacent to a boundary extending along a first direction in the mother board of the array substrate.

Abstract: A pressure detection apparatus includes a substrate, a light conducting layer, a light absorbing layer, and a photosensitive layer that are arranged in order, and further includes a light source. The light source is capable of emitting light of a first frequency, and an emergent surface of the light source faces toward the light conducting layer. The light conducting layer disperses the light of the first frequency. The light absorbing layer includes a container forming a closed space and an absorption liquid filling the container, where the absorption liquid absorbs at least a part of the light of the first frequency, and at least one side surface of the container is an elastic surface. A photosensitive surface of the photosensitive layer faces toward the light absorbing layer, and the photosensitive layer is used to detect the light of the first frequency that passes through the light absorbing layer.

Abstract: A system for navigating a mobile object receives satellite navigation signals from a plurality of satellites. Using one or more of the satellite navigation signals from the plurality of satellites, for each respective channel of a plurality of channels, the system generates an estimate of clock error of a clock of the mobile object using a first error correction stage and generates an estimate of a respective carrier tracking error for the respective channel using a second error correction stage that is distinct from the first error correction stage. In accordance with the estimate of the clock error and the estimate of the respective carrier tracking error for each of the plurality of channels, the system computes position and velocity estimates for the mobile object. The system performs a navigation function for the mobile object in accordance with the computed position and velocity estimates for the mobile object.

Abstract: Provided are compositions for simultaneously modifying amino acids of site 736 and site 738 of pAPN gene and application thereof. An sgRNA set specifically recognizing porcine pAPN gene can recognize sequences near amino acids of site 736 and site 738 of pAPN gene, and has strong specificity. On this basis, in combination with a composition consisting of a cleavage protein and a double-stranded donor sequence, simultaneous modification of amino acids of site 736 and site 738 of the pAPN gene can be realized. Under editing of the composition, the amino acids of site 736 and site 738 of the pAPN gene are modified precisely and effectively, which can prevent normal expression of other amino acids of the pAPN gene from being damaged or changed. Therefore, it can resist TGEV infection, and also can retain the physiological activity function of the pAPN protein to the maximum extent.

Abstract: The presently disclosed subject matter relates to devices, systems, and methods of producing an improved fluid flow assembly and liquid/gas diffusion layer in solid polymer electrolyte electrochemical cells. In one aspect, a fluid flow assembly for a polymer electrolyte water electrolyzer includes a flow field having an inlet, an outlet, and a plurality of discrete lands arranged within the flow field. A liquid/gas diffusion layer is positioned in communication with the flow field between the inlet and the outlet, the liquid/gas diffusion layer having a solid substrate through which a plurality of pores is formed. The disclosed bipolar plate flow field and liquid/gas diffusion layer could work together or separately with other types of porous transport layers or bipolar plates to enhance the water/gas transport. In these configurations, the lands can be arranged and configured such that the plurality of pores are substantially unobstructed by the lands.

Abstract: The presently disclosed subject matter relates to devices, systems, and methods for fabricating a solid polymer electrolyte electrode assembly are provided. One or more electrode for a solid polymer electrolyte electrode assembly includes a porous substrate configured as a liquid/gas diffusion layer and an ionomer-free catalyst coated on the substrate.

Abstract: The present disclosure provides a method and an apparatus for processing data. The method includes: establishing a data connection between a local service and a Web client, receiving data that the Web client transmits to the local service through the data connection; and storing the received data to the designated local storage space.

Abstract: The present disclosure may provide an atomizer and an electronic atomization device. The atomizer may include a shell, a heating assembly, a lid, a base, and a first sealing component. The shell defines a liquid cavity and a smoke outlet. The heating assembly may heat and atomize the liquid into a smoke. The lid and the base may be provided to fix the heating assembly therebetween. The lid defines a liquid inlet communicating with the liquid cavity, and the liquid may flow through to reach the heating assembly. The atomizer may define an air entering hole, such that external air may enter the device through the hole to drive smoke to flow. The first sealing component may be engaged between the lid and the heating assembly, contacting both at the same time and defining air guiding channels to guide the air to flow into the liquid cavity.