Abstract: The invention discloses an electric vehicle, and the electric vehicle comprises vehicle beams and a battery unit, and the battery unit comprises a plurality of battery packs arranged side by side along a width direction of the vehicle beams; and a locking unit is arranged on the vehicle beams, and a connecting unit is arranged between the two adjacent battery packs corresponding to the vehicle beams, and the connecting unit is matched with the locking unit to lock and connect the battery unit to the vehicle beams. In this invention, the battery unit is provided with a plurality of battery packs, which is capable for supplying power to a heavy electric vehicle. The connection between the battery unit and the vehicle beams can also be located in the space between the battery packs to improve the connection stability.

Abstract: Disclosed in the present invention are a battery pack for an electric vehicle, and an electric vehicle comprising the battery pack. The battery pack for an electric vehicle is mounted on a vehicle body longitudinal beam of the electric vehicle, and comprises: a box body comprising at least two box body units, battery modules for externally charging and discharging being arranged in the box body units; and locking shafts provided horizontally, arranged on the upper part between two adjacent box body units, and corresponding to the position of a locking mechanism on the longitudinal beam. As for an electric vehicle, the center of gravity can be reduced, the driving stability is improved, and the height space below the vehicle can be fully utilized, so that a battery swapping device can conduct battery swapping easily, the station building cost, time and difficulty of a battery swapping station are reduced.

Abstract: An automatic and rapid detection method of a gradation for an asphalt mixture and an automatic device are provided. The method includes: asphalt mixture introduction; asphalt mixture dehydration, including: heating the asphalt mixture and dehydrating to a target dehydration rate; asphalt combustion, including: burning the asphalt mixture by using a combustion method to form smoke to be removed, thereby obtaining aggregates, and obtaining an asphalt content; aggregate screening, including: grading through screening the aggregates according to different particle sizes by using a vibration screening device, and then weighing the aggregates, thereby obtaining weights of the aggregates; and obtaining the gradation, including: calculating the gradation for the asphalt mixture according to the weights of the aggregates with the different particle sizes and the asphalt content.

Abstract: An electrical connector includes: an insulating housing having a first mating face and a second mating face, a first slot through the first mating face, and a second slot through the second mating face, the second mating face protruding beyond the first mating face; a first set of terminals extending into the first slot; a first protective member and a second protective member extending into the first slot and attached to opposite end insides of the first slot; and a third protective member and a fourth protective member extending into the second slot and attached to opposite end insides of the second slot, wherein the second protective member and the third protective member are connected by a first metal plate, the second protective member extends downward from the first metal plate, and the third protective member extends upward from the first metal and then bends into the second slot.

Abstract: An electrical connector assembly includes an electrical plug connector and an electrical receptacle connector corresponding to the electrical plug connector. The electrical plug connector includes a plug insulated housing as well as plug terminals and buckling portions on the plug insulated housing. The electrical receptacle connector includes a receptacle insulated housing as well as receptacle terminals and locking components on the receptacle insulated housing. The locking components at the two sides of the electrical receptacle connector are firmly buckled with the buckling portions at the two sides of the electrical plug connector. Therefore, during the use of the electrical connector assembly, the electrical plug connector can be prevented from detaching off the electrical receptacle connector.

Abstract: A method and an apparatus for controlling an Android app, and a terminal device are provided, and relate to the field of computer control technologies. According to the method, the Windows terminal device may create shortcuts for an Android app in common control areas, that is, in a start menu and settings and on a control panel and a desktop, by using an Android simulator platform. In this way, it is convenient for a user to perform an operation, for example, a viewing, starting, uninstallation, or changing operation, on the Android app at a corresponding shortcut location of the Windows terminal device.

Abstract: A driving circuit, configured to drive a venting device, includes a first node, a second node, and an amplifying circuit. The venting device, configured to be controlled to open a vent or seal the vent, includes a film structure, which includes a first flap and a second flap, and an actuator, which includes a first actuating portion disposed on the first flap and a second actuating portion disposed on the second flap. When the venting device is controlled to open the vent, the driving circuit generates a first voltage at the first node and generates a second voltage at the second node. When the venting device is controlled to seal the vent, the driving circuit generates a third voltage at both the first node and the second node. The first voltage is larger than the third voltage, and the third voltage is larger than the second voltage.

Abstract: A feedback control system configured to drive a load is disclosed. The feedback control system includes an up-sampling circuit, configured to perform an un-sampling operation on a source signal and produce an up-sampled signal with an up-sampling frequency according to the up-sampled signal and a feedback signal from the load; a delta circuit, coupled to the up-sampling circuit and configured to produce a delta signal; a sigma circuit, configured to produce a density modulation signal according to the delta signal; and a driving device, configured to drive the load according to the density modulation signal with the up-sampling frequency.

Abstract: A demodulation signal generator, coupled to an air-pulse generator comprising a flap pair, includes a resonance circuit. The resonance circuit produces a first demodulation signal and a second demodulation signal. The resonance circuit and the flap pair co-perform a resonance operation, such that the first demodulation signal and the second demodulation signal are generated via the co-performed resonance operation and have opposite polarity. The flap pair performs a differential movement to form an opening to perform a demodulation operation on a modulated air pressure variation.

Abstract: An image processing method includes an electronic device configured to perform style migration processing on a first image sequence based on a target migration style by using a fused style migration model into which a plurality of single-style migration models is fused in order to obtain a second image sequence. A style of a 1st frame of image to a style of a last frame of image in the second image sequence change in a first style order in styles of output images of the plurality of single-style migration models. The first image sequence may be from a video shot by using the electronic device. The electronic device may save a plurality of frames of images in the second image sequence as a video. The video may present an effect of rapid time lapse during play.

Abstract: An apparatus and method of feature extraction for identifying a pattern. An improved method includes obtaining data representative of a pattern instance, dividing the pattern instance into a plurality of zones, determining a representative characteristic of a zone of the plurality of zones, generating a representation of the pattern instance using a feature vector, wherein the feature vector includes an element corresponding to the representative characteristic, wherein the representative characteristic is indicative of a spatial distribution of one or more features of the zone. The method may also include classifying and/or selecting pattern instances based on the feature vector.

Abstract: The present invention discloses an unlocking mechanism, a support assembly, a battery pack unlocking method, and a battery pack locking method. The unlocking mechanism is used for unlocking a battery pack locked on a support of an electric vehicle. The unlocking mechanism comprises an unlocking input member and an unlocking output member; the unlocking input member is adapted to be connected to an external unlocking drive portion, and is driven by the external unlocking drive portion to drive the unlocking output member to move; the unlocking output member is adapted to be connected to a locking mechanism on the support and drive the locking mechanism to move to unlock or lock the battery pack. The unlocking input member is connected to the external unlocking driving portion to be driven to move, to drive the locking mechanism to move to achieve the purpose of unlocking or locking the battery pack.

Abstract: Use of pentoxifylline (PTX) in preparation of a medicament for repairing endothelial glycocalyx damage, and belongs to the technical field of medicine. A chlorine-induced endothelial glycocalyx damage model is established. After the endothelial glycocalyx damage model is successfully established, the PTX is intraperitoneally injected into a rat with endothelial glycocalyx damage. The result shows that the PTX effectively repairs shedding of glycosaminoglycans and syndecans in the endothelial glycocalyx damage and significantly downregulates the expression of inflammatory factors including tumor necrosis factor alpha (TNF-?), interleukin-6 (IL-6), and matrix metallopeptidase 13 (MMP-13). Therefore, the PTX can effectively repair the endothelial glycocalyx damage, providing a new theoretical basis for repairing the endothelial glycocalyx damage. Furthermore, with high safety, the PTX has the prospect of being developed into the medicament for repairing the endothelial glycocalyx damage.

Abstract: A driving circuit, configured to drive a venting device, includes a first node, a second node, and an amplifying circuit. The venting device, configured to be controlled to open a vent or seal the vent, includes a film structure, which includes a first flap and a second flap, and an actuator, which includes a first actuating portion disposed on the first flap and a second actuating portion disposed on the second flap. When the venting device is controlled to open the vent, the driving circuit generates a first voltage at the first node and generates a second voltage at the second node. When the venting device is controlled to seal the vent, the driving circuit generates a third voltage at both the first node and the second node. The first voltage is larger than the third voltage, and the third voltage is larger than the second voltage.

Abstract: A method, which is applied in a driving circuit including an analog-to-digital convertor (ADC) and a switching circuit including an inductor and coupled to a load, includes steps of: performing an analog-to-digital conversion on a load voltage of the load at a first rate; and producing at least a current pulse flowing through the inductor at a second rate. Wherein, each current pulse among the at least a current pulse is accomplished within a second cycle corresponding to the second rate, all of the at least a current pulse are accomplished within a first cycle corresponding to the first rate, and a first length of the first cycle is longer than twice of a second length of the second cycle.

Abstract: A feedback control system configured to drive a load is disclosed. The feedback control system includes an up-sampling circuit, configured to perform an un-sampling operation on a source signal and produce an up-sampled signal with an up-sampling frequency according to the up-sampled signal and a feedback signal from the load; a delta circuit, coupled to the up-sampling circuit and configured to produce a delta signal; a sigma circuit, configured to produce a density modulation signal according to the delta signal; and a driving device, configured to drive the load according to the density modulation signal with the up-sampling frequency.

Abstract: A method for selecting patterns for training a model to predict patterns to be printed on a substrate. The method includes (a) obtaining images of multiple patterns, wherein the multiple patterns correspond to target patterns to be printed on a substrate; (b) grouping the images into a group of special patterns and multiple groups of main patterns; and (c) outputting a set of patterns based on the images as training data for training the model, wherein the set of patterns includes the group of special patterns and a representative main pattern from each group of main patterns.

Abstract: An electrical connector includes: a housing; a row of first terminals retained in the housing and comprising signal terminals and grounding terminals, each first terminal comprising a plate portion and a leg portion extending out of the housing, the plate portion defining an outer face exposed upon the housing and an inner face opposite the outer face, the outer face of the plate portion of the terminal defining a mating face; a first shielding plate parallel to and located by the inner faces of the first terminals; the first shielding plate defines plural first grounding portions, each first grounding portion defines a vertical cutting face which touches a corresponding inner face of the plate portion of an associated grounding terminal.

Abstract: A method, which is applied in a driving circuit including an analog-to-digital convertor (ADC) and a switching circuit including an inductor and coupled to a load, includes steps of: performing an analog-to-digital conversion on a load voltage of the load at a first rate; and producing at least a current pulse flowing through the inductor at a second rate. Wherein, each current pulse among the at least a current pulse is accomplished within a second cycle corresponding to the second rate, all of the at least a current pulse are accomplished within a first cycle corresponding to the first rate, and a first length of the first cycle is longer than twice of a second length of the second cycle.

Abstract: An electrical connector includes a housing having a base portion and a tongue portion, two rows of terminals having signal terminals and ground terminals, a grounding member, and a metal shell. The grounding member is formed by bending a metal plate to have two long plates with fingers in contact with corresponding ground terminals. The base body defines a mating face and an outer face. A positioning groove is formed between a first side plate and the outer wall face. The metal shell is provided with an inner plate of which the lower edge is cut into a specific shape to form a locking edge. The metal shell has an inner shell and an outer shell.