Abstract: A method for evaluating a consistency of a battery pack is provided, including: obtaining an initial/real rated capacity and an initial/real dischargeable electric quantity of each cell in a battery pack after a charge and discharge cycle of the battery pack; generating a first/second data diagram for every cells based upon the initial/real rated capacity and the initial/real dischargeable electric quantity; obtaining a first/second information of key cells in the first/second data diagram, defining an initial/real cell distribution region according to the first/second information by processing the first/second data diagram, and calculating a first/second area of the initial/real cell distribution region; and evaluating the consistency of the battery pack according to the first/second area. A strategy for balancing the battery pack is further provided.

Abstract: A method for generating a data diagram is provided, including: obtaining a first data of each cell in a battery pack during a charge and discharge cycle of the battery pack; calculating a rated capacity and a dischargeable electric quantity of each cell based upon the data obtained; and generating a first data diagram for every cell of the battery pack based upon the rated capacity and the dischargeable electric quantity of each cell. A method for managing the battery pack based on the data diagram is further provided.

Abstract: Service deployment in the conventional network is very complicated. Operator needs to plan the service path in advance, and then manually configure the policy for each node on the service path. The software-definable network service configuration method disclosed in the present invention is different from the conventional network. On the one hand, the control layer has a global network resource view to more easily plan service paths for service requests. On the other hand, the control layer adopts a centralized management of physical switch nodes in the data layer via a southbound interface, which makes it easier to automatically implement policy configuration in physical switch nodes.

Abstract: The present invention relates to a coumarin (keto) oxime ester compound of formula (I), wherein n and R1, R2, R3, R4, R5, R6, and R7 are as defined in the specification. The compound has strong ultraviolet absorption in the range of 300 to 450 nm. After absorbing light energy, it can quickly transfer energy and continuously initiate polymerization. It has obvious advantages in terms of photosensitivity and pattern integrity, and is very suitable for radiation curing by UV-LED light source. In addition, the compound of formula (I) also has good thermal stability. The present invention also relates to a method for preparing the compound of formula (I) and use of the compound. The compound is suitable as a photoinitiator in a UV-LED light curing system and is suitable for the radiation wavelength of UV-LED light curing.

Abstract: An electronic device such as a speaker device may have a curved housing characterized by a vertical longitudinal axis. A layer of fabric may cover the curved housing. A touch sensor may be used to detect touch input on the layer of fabric. The touch sensor may include capacitive touch sensor electrodes including drive lines and sense lines. In some arrangements, the touch sensor is formed from conductive strands in the layer of fabric. In other arrangements, the touch sensor is formed from conductive traces on a substrate. The substrate may be formed from portions of the curved housing or may be formed from a layer that is separate from the housing. Light-emitting components and/or fabric with different visual characteristics may be used to mark where the touch-sensitive regions of the fabric are located. The touch-sensitive regions may be shaped as media control symbols.

Abstract: Disclosed are a gas sampling system and a gas sampling method for a fuel cell, a current density distribution estimation method for the fuel cell, a calibration method and a calibration device for an internal state model for the fuel cell, and a computer equipment. The gas sampling method for a fuel cell includes arranging a plurality of sampling pipelines and a plurality of sampling points, the plurality of sampling points being arranged at a cathode inlet, an anode outlet, an anode inlet, a cathode outlet, and in an anode flow channel, and a cathode flow channel of the fuel cell, the sampling points arranged in the anode flow channel and the cathode flow channel being located in central regions of cross sections of the flow channels, and the sampling pipelines being connected to the plurality of sampling points, respectively, and configured to guide gas inside the fuel cell out.

Abstract: A method for diagnosing degradation of a fuel cell stack, including: S10, qualitatively determining a degradation type of the fuel cell stack according to a voltage-current curve of the fuel cell stack; S20, quantitatively measuring parameter values of each of individual cells of the fuel cell stack according to the degradation type, and quantitatively determining a degradation degree of each of the individual cells according to the parameter values; S30, determining a uniformity degradation degree among the individual cells of the fuel cell stack according to a non-uniformity degree of a voltage distribution of the individual cells. By qualitatively determining the degradation type of the fuel cell stack, the degradation condition of the entire fuel cell stack may be obtained.

Abstract: The present disclosure relates to a fuel cell stack, a bipolar plate, and a gas diffusion layer. The fuel cell stack includes a plurality of first graphite bipolar plates, a plurality of second graphite bipolar plates, and a plurality of reacting units arranged in sequence. The first graphite bipolar plate includes an air flow channel, a hydrogen gas flow channel, and a cooling flow channel. At least one second graphite bipolar plate is disposed between two adjacent first graphite bipolar plates. The second graphite bipolar plate includes an air flow channel and a hydrogen gas flow channel. A reacting unit is disposed between any two adjacent bipolar plates.

Abstract: The present disclosure relates to a fuel cell bipolar plate including a substrate. A surface of the substrate defines a first flow channel and a second flow channel adjacent to the first flow channel. A rib is formed between the first flow channel and the second flow channel. A top surface of the rib defines a groove or a second bore. One or both of the first flow channel and the second flow channel is in fluid communication with the groove or the second bore.

Abstract: Disclosed are an electric wheel assembly applicable for a parallelly mounted dual-tire wheel, an axle, and a vehicle. The electric wheel assembly includes a wheel and support axle assembly, an internal-rotor hub motor, a planetary gear reducer and a brake system. A planetary carrier is connected to a hub. The hub is connected to a spoke and a rim. The wheel support axle passes through a rotor sleeve and is provided with a hub bearing to support the hub and a whole wheel. A sun gear disposed at an end of the rotor sleeve of the internal-rotor hub motor is a power input of the planetary gear speed reducer, and the planetary carrier is a power output. A planetary gear of the planetary gear reducer is a tower-shaped gear and realizes a relatively high transmission ratio under a condition that an axial length is relatively small.

Abstract: The present invention relates to a method for building a virtual scenario library for autonomous vehicles, including steps such as acquiring data, extracting data, cleaning data, annotating scenario elements, forming a data set, determining an optimal k value, determining initial clustering centers, obtaining logical scenarios, and building a virtual scenario library. The present invention provides a theoretical basis and technical support for the building of a virtual scenario library for autonomous driving. The method is easy to operate, and can provide a large number of test target scenario environments meeting different requirements, to test the safety of an autonomous driving system in virtual scenarios. Compared with vehicle test in real environments, this method is more cost-effective, efficient, and repeatable, and can simulate a variety of different scenarios, to speed up the research and development of autonomous vehicles and promote the safe deployment of autonomous vehicles.

Abstract: An electronic device has a keyboard with an internal membrane. The membrane has a set of strain gauges configured to respond to a key press, such as when a collapsible dome collapses into contact with the membrane. The strain gauges are connected in a half Wheatstone bridge configuration and are positioned on the membrane in order to limit effects of temperature and subtle flexure of the membrane. The strain gauges are also configured to magnify detection of a resistance differential when a keycap is pressed with sufficient force.

Abstract: An apparatus for encapsulating a material includes a first channel in fluid communication with a source of a material for encapsulation, at least one second channel in fluid communication with a source of a photopolymerizable compound, and at least one third channel in fluid communication with a source of an encapsulating fluid. Flow of the photopolymerizable compound into the first channel produces sheath flow in the first channel such that the material is within the polymerizable compound. Addition of the encapsulating fluid produces encapsulation precursors. Upon irradiation via a UV-radiation source, the photopolymerizable compound in the encapsulation precursor forms a polymer shell encapsulating the material for encapsulation.

Abstract: A device for flexibly separating cold and hot fluid media, including: a tank body, where the tank body is cylindrical and disposed vertically, upper and lower ends of the tank body are respectively provided with a hot fluid inlet and a cold fluid inlet to provide storage space for hot and cold fluids, at least one adsorption layer is provided on a side wall of the tank body, and the adsorption layer is made of a ferromagnetic material or iron; and a thermal insulation board, where the thermal insulation board is of a plate structure and set on a horizontal cross-section of the tank body, with a shape and area matching a horizontal cross-section of the tank body, a sealing strip is arranged along a circumferential direction of the thermal insulation board, the sealing strip is of a hollow structure, the hollow part is evenly filled with adsorption blocks.

Abstract: A method for generating a data diagram is provided, including: obtaining a first data of each cell in a battery pack during a charge and discharge cycle of the battery pack; calculating a rated capacity and a dischargeable electric quantity of each cell based upon the data obtained; and generating a first data diagram for every cell of the battery pack based upon the rated capacity and the dischargeable electric quantity of each cell. A method for managing the battery pack based on the data diagram is further provided.

Abstract: A method for evaluating a consistency of a battery pack is provided, including: obtaining an initial/real rated capacity and an initial/real dischargeable electric quantity of each cell in a battery pack after a charge and discharge cycle of the battery pack; generating a first/second data diagram for every cells based upon the initial/real rated capacity and the initial/real dischargeable electric quantity; obtaining a first/second information of key cells in the first/second data diagram, defining an initial/real cell distribution region according to the first/second information by processing the first/second data diagram, and calculating a first/second area of the initial/real cell distribution region; and evaluating the consistency of the battery pack according to the first/second area. A strategy for balancing the battery pack is further provided.

Abstract: A displacement sensor for a frequency modulation continuous wave laser interference optical fiber, comprising a single mode frequency modulation continuous wave laser (1) and at least one optical fiber displacement sensing system; the optical fiber displacement sensing system comprises an optical circulator (2), an optical fiber collimator (3), a partial reflector (4), a cooperative reflector (5) and a photoelectric detector (6); the single mode frequency modulation continuous wave laser (1) is connected to an incident port of the optical circulator (2) by means of a single mode optical fiber or an optical fiber coupler; an adjacent emergent port of the optical circulator (2) is connected to the optical fiber collimator (3) by means of the single mode optical fiber; a third port of the optical circulator (2) is connected to the photoelectric detector (6).

Abstract: Disclosed are a power battery pack safety prevention and control system for an electric vehicle and a control method. The power battery pack safety prevention and control system includes a signal collection device, a master controller, and a stepwise prevention and control actuator. The master controller includes a fault diagnosis device, a cell thermal runway determination device, and a battery pack thermal runway spread determination device which are respectively electrically connected to the stepwise prevention and control actuator and send different control instructions to the stepwise prevention and control actuator. The stepwise prevention and control actuator can perform different levels of prevention and control actions according to different control instructions sent by the fault diagnosis device, the cell thermal runway determination device, and the battery pack thermal runway spread determination device.

Abstract: A charging apparatus includes a heat exchange pipeline, and a refrigerant liquid output pipe and a refrigerant liquid input pipe, which are connected to the heat exchange pipe. The charging apparatus can ensure a vehicle battery can be charged at an optimal temperature range, thereby reducing a charging time of the charging apparatus.

Abstract: The present disclosure relates to methods for making a reference electrode and a lithium ion battery having the reference electrode. The reference electrode obtained has a long service life, moreover, the manufacturing process is simple and can meet the industrial production requirements, making the production and the application of the lithium-ion battery with the reference electrode possible.