Abstract: A SAR ADC may include a plurality of capacitor networks, wherein each capacitor network of a plurality of capacitor networks has a plurality of sampling capacitors for sampling over a plurality of sampling sub-phases an analog input signal to the SAR ADC and at least one non-sampling capacitor. The SAR ADC may also include a DAC comprising a plurality of sub-DACs including at least a first sub-DAC representing most significant bits of an output of the SAR ADC, wherein the output of the first sub-DAC is coupled to the sampling capacitors of the plurality of capacitor networks and a second sub-DAC representing bits of the output of the SAR ADC lesser in magnitude significance than those of the first sub-DAC, wherein the output of the second sub-DAC is coupled to a respective one of at least one non-sampling capacitor of each of the plurality of capacitor networks.

Abstract: An electrical connection plug, an electrical connection device and an electric. The electrical connection plug includes a first fixing plate, a mounting base, an electrical connection assembly and a plurality of plug-in assemblies, the electrical connection assembly and the plurality of the plug-in assemblies are all connected to the mounting base, and the mounting base is in floating connection with the first fixing plate. The electrical connection device includes an electrical connection socket and the above electrical connection plug, the electrical connection assembly and the plurality of plug-in assemblies are all connected to the electrical connection socket. The electric vehicle includes a battery pack, a vehicle body and the above electrical connection device, the electrical connection plug is connected to the vehicle body, and the electrical connection socket is connected to the battery pack.

Abstract: A verification method for fast source and path embedded with random authentication is provided. The method includes: generating a corresponding verification structure for an expected path according to a predetermined path strategy, embedding different m pieces of fragment information randomly selected with same possibility from the verification structure for the expected path to a header of a data packet to be transmitted in a data flow, and transmitting the data packet to be transmitted with the embedded fragment information to a next hop of routing node of the expected path, performing a verification on the received data packet by the respective intermediate routing node on the expected path, and forwarding the data packet to the next routing node when the verification passes, performing verification on the received data packet by the data flow destination, performing a parsing verification evaluation on the expected path when the verification passes.

Abstract: A visual positioning method and system for a battery replacement device. The method comprises: controlling a battery replacement device to move below a battery accommodating portion at the bottom of an electric vehicle; photographing, by means of a photographing apparatus, a first target photographing region at a first focal length so as to obtain a positioning determination photograph; controlling the photographing apparatus to adjust the first focal length to a second focal length; and photographing, by means of the photographing apparatus, a second target photographing region at the second focal length so as to obtain a lock-state determination photograph.

Abstract: Embodiments of the present disclosure relate to the field of wireless communication technologies. A base station is disclosed, including a metal body, at least two antennas and a switching component. The metal body is provided with at least two corner parts and the at least two corner parts are oriented in different directions. One antenna is disposed at a corner part and the corner part is configured to reflect a signal radiated by the antenna to enable a combination of directions of signals radiated by the at least two antennas to cover all directions on a horizontal plane. The at least two antennas are all connected to the switching component to enable an antenna with a strongest signal among the at least two antennas to work.

Abstract: The invention provides a composite polymer film material based on a tungsten/copper/sulfur cluster compound, a preparation method and use thereof. The cluster compound has a chemical formula of: [RWS3Cu2(La)]n(M)n, wherein R is tris(3,5-dimethylpyrazolyl)hydroborate, tris(pyrazolyl)hydroborate, or pentamethylcyclopentadienyl; La has a structural formula of: when M is perrhenate, n is 4; and when M is triflate, n is 6. The synthesis process of the cluster compound is simple and controllable. A tetrahedral and an octahedral tungsten/copper/sulfur cluster compound that are good third-order nonlinear optical (NLO) active species are selectively synthesized by using different cuprous salts. Composite polymer films of various layers are prepared by spin coating. Such films, as flexible, portable and easy-to-process solid materials, are applicable to third-order NLO devices.

Abstract: Structural adhesives containing a core-shell toughening component miscible in methylacrylic-based adhesives in addition to at least one toughening agent which is not miscible in methacrylic adhesives, produced surprisingly improved impact resistance, particularly side impact testing.

Abstract: A battery, a battery module, a battery pack and an electric device are provided. In some embodiments, the battery includes: a positive electrode, a separator and a negative electrode, wherein the separator includes a base film, a first coating provided on a first surface of the base film, and a second coating provided on a second surface of the base film, the first coating includes a first polar substance, and hydrogen bonds are formed between the first polar substance and a positive binder; hydrogen bonds are formed between the second polar substance and a negative binder and/or a negative active component. In the present disclosure, binding forces between the separator and the positive electrode and the negative electrode may be increased by the hydrogen bonds, thus reducing a cycle expansion rate of a bare cell and improving a high-rate discharge performance and a cycle performance of the battery.

Abstract: Provided is a lock mechanism, wherein the lock mechanism includes a lock base, the lock base is provided with an opening and a cavity extending from the opening, the opening is used for the lock shaft mounted to the battery pack to enter the cavity, the lock mechanism further includes: a lock assembly, the lock assembly is connected to one side of the lock base opposite the lock shaft, the lock assembly is moveable relative to the lock base, and the side of the lock base opposite the lock shaft extends into the cavity or exits the cavity; wherein, the lock assembly is capable of preventing the lock shaft from exiting the cavity from the opening when the lock assembly extends into the cavity; the lock assembly is capable of allowing the lock shaft to exit the cavity from the opening when the lock assembly exits the cavity.

Abstract: A switch circuit includes a control unit, a driving unit, a voltage sudden-change unit, and a connection unit. The connection unit is configured to turn on or turn off an electrical connection between a power-supply device and a load. The control unit is configured to control the driving unit to output or stop outputting a driving signal to the connection unit, where the driving signal allows to turn on the connection unit. The voltage sudden-change unit is coupled with a driving node between the driving unit and the connection unit. The control unit is configured to control the voltage sudden-change unit to output a voltage sudden-change signal to the driving node, where the voltage sudden-change signal allows to make the connection unit be switched to a turned-off state from a turned-on state quickly when the driving unit stops outputting the driving signal.

Abstract: The present invention relates to the field of singlet oxygen technologies, and particularly to a singlet oxygen capturing or releasing material, and a preparation method and use thereof. The singlet oxygen capturing material according to the present invention has a chemical formula of [Cd(BP4VA)(4-NBA)2]n; and the singlet oxygen releasing material has a chemical formula of [Cd(BP4VA-1O2)(4-NBA)2]n, in which BP4VA is 9,10-bis[(cis)-2-(pyridin-4-yl)vinyl]anthracene, 4-NBA is a unit derived by removing a hydrogen ion from 4-nitrobenzoic acid after reaction, and n=3000-50000. The material has simple synthesis steps and high yield, and is capable of being prepared in large quantities. The material is capable of efficiently and rapidly capturing or releasing singlet oxygen. The singlet oxygen capturing material is also useful as a fluorescence sensor for detecting oxygen, with the advantages of simple operation, high selectivity, high sensitivity, and good recyclability and good stability.

Abstract: The invention provides a positive electrode material, a preparation method thereof, and an electrochemical device. The positive electrode material is a secondary particle formed by the aggregation of primary particles. The secondary particle contains a cavity structure inside. Based on the positive correlation characteristics between the content of an A element in the positive electrode material particles and the cavity ratio, by introducing an appropriate proportion of the A element when the positive electrode material precursor is formed, the accompanying cavity structure formed inside the precursor is at an appropriate cavity ratio, in order to ensure that the positive electrode material may buffer the volume strain during the charge and discharge process through the internal appropriate proportion of the cavity structure, and alleviate the rupture phenomenon of the secondary particle during the cycle, thereby improving the cycle life and volume energy density of the positive battery.

Abstract: A method for nano-depth surface activation of a PTFE-based membrane and relates to the technical field of polymer composites is disclosed. The method comprises the following steps: covering a functional surface of a PTFE-based nano functional composite membrane, performing surface activation treatment on a single surface of the membrane to which a bonding adhesive is applied, and migrating and complexing a high-toughness cold bonding adhesive tape on the membrane surface, with an activated structure layer, of the PTFE-based nano functional composite membrane through a mechanical adhesive applying device to form an adhesive-membrane complex. An extremely strong affinity and a high-strength bonding performance are generated between the membrane and the adhesive, and the adhesive-membrane complex is formed. Integration of membrane/adhesive bonding complexing, membrane/membrane bonding complexing and membrane/adhesive layer bonding is realized.

Abstract: An apparatus includes a strength member including a core formed of a composite material, and an encapsulation layer disposed around the core. A conductor layer is disposed around the strength member. A coating is disposed on the conductor layer. The coating is formulated to have a solar absorptivity of less than 0.5 at a wavelength of less than 2.5 microns, and a radiative emissivity of greater than 0.5 at a wavelength in a range of 2.5 microns to 15 microns, at an operating temperature in a range of 60 degrees Celsius to 250 degrees Celsius. The coating may have an erosion resistance that is at least 5% greater than an erosion resistance of aluminum or aluminum alloys.

Abstract: A high-temperature high-linear-pressure micro-eutectic method for enhancing a strength of a polytetrafluoroethylene (PTFE)-based membrane is disclosed. The method comprises the following steps: pushing a PTFE-based nano functional composite membrane forwards at a speed of 6-8 m/min in a high-temperature high-linear-pressure micro-eutectic cavity with a length of 1.5 m at a temperature of 380° C., controlling a linear pressure of a surface of the PTFE-based membrane to be 50-80 N/m, and under a coiling traction of a membrane coiling roller outside the cavity, enabling membrane molecular chains to shrink and generate eutectic phases, wherein multiple micro-eutectic molecular structures are arranged in parallel, and the PTFE-based nano functional composite membrane has a density of 2.

Abstract: A battery pack and an electric vehicle are provided. A plurality of lock shafts are mounted on an outer side of the battery pack, and each of the lock shafts includes a shaft seat and a shaft rod. The lock shaft is mounted to the outer side of the battery pack by the shaft seat. A concave positioning hole is arranged at an end of the shaft rod away from the shaft seat, and a first positioning steel magnet is mounted in the positioning hole.