Abstract: A resonant converter including a full-bridge switch circuit, a resonant circuit, a transformer, a rectifier circuit, a current sensor and a controller is provided. The full-bridge switch circuit includes switches. The resonant circuit is electrically connected to the full-bridge switch circuit and includes a resonant inductor. The transformer includes primary and secondary windings, and the primary winding is electrically connected to the resonant circuit. The rectifier circuit is electrically connected to the secondary winding. The current sensor is electrically connected to the resonant circuit. When a current flowing through the resonant inductor passes through the current sensor, the current sensor generates a current differential signal correspondingly.

Abstract: A charging system includes a power input part, an inverter, a DC bus, at least one charging device, a first bidirectional energy storage module, a second bidirectional energy storage module and an intelligent controller. The charging device includes a DC/DC converter and a charging gun. A first bidirectional DC/DC converter of the first bidirectional energy storage module receives and converts the DC power from the inverter for charging a first battery, or converts a first storage electric energy of the first battery for the charging device. A second bidirectional DC/DC converter of the second bidirectional energy storage module receives and converts the electric energy outputted by the DC/DC converter of the charging device for charging a second battery, or converts a second storage electric energy of the second battery for the charging device. The intelligent controller controls operations of the first bidirectional DC/DC converter and the second bidirectional DC/DC converter.

Abstract: A full-bridge series resonant converter includes a full-bridge switch circuit, a transformer, a resonant tank, a sensing circuit, and a processing circuit. The full-bridge switch circuit includes a first switch leg and a second switch leg having a second lower switch. The resonant tank includes a resonant inductor, a magnetizing inductor, and a resonant capacitor. The sensing circuit is coupled between the resonant capacitor and a ground point of a primary side of the transformer for sensing a node voltage between the resonant capacitor and the ground point as a sensing voltage. The processing circuit counts a turned-on time of the second lower switch as a first half-cycle time based on the sensing voltage, and duplicates the first half-cycle time as a second half-cycle time for controlling the full-bridge switch circuit.

Abstract: A charging system includes a power input part, an inverter, a DC bus, at least one charging device, a first bidirectional energy storage module, a second bidirectional energy storage module and an intelligent controller. The charging device includes a DC/DC converter and a charging gun. A first bidirectional DC/DC converter of the first bidirectional energy storage module receives and converts the DC power from the inverter for charging a first battery, or converts a first storage electric energy of the first battery for the charging device. A second bidirectional DC/DC converter of the second bidirectional energy storage module receives and converts the electric energy outputted by the DC/DC converter of the charging device for charging a second battery, or converts a second storage electric energy of the second battery for the charging device. The intelligent controller controls operations of the first bidirectional DC/DC converter and the second bidirectional DC/DC converter.

Abstract: A charging system includes a power input part, an inverter, a DC bus, at least one charging device, a first bidirectional energy storage module, a second bidirectional energy storage module and an intelligent controller. The charging device includes a DC/DC converter and a charging gun. A first bidirectional DC/DC converter of the first bidirectional energy storage module receives and converts the DC power from the inverter for charging a first battery, or converts a first storage electric energy of the first battery for the charging device. A second bidirectional DC/DC converter of the second bidirectional energy storage module receives and converts the electric energy outputted by the DC/DC converter of the charging device for charging a second battery, or converts a second storage electric energy of the second battery for the charging device. The intelligent controller controls operations of the first bidirectional DC/DC converter and the second bidirectional DC/DC converter.

Abstract: A test method, a test apparatus, a test system, and a storage medium are provided, so as to solve the technical problem of how the leakage of a battery cell is detected. The test method of this embodiment of this application includes: (S10) obtaining a CAN signal output by a gas sensor, where the gas sensor is disposed on a test box, and a battery cell is placed in the test box; (S20) determining a gas concentration of a predetermined gas in the test box based on the CAN signal; and (S30) sending a concentration exceedance signal when the gas concentration is higher than a concentration threshold.

Abstract: A test method, a test apparatus, a test system, and a storage medium are provided, so as to solve the technical problem of how the leakage of a battery cell is detected. The test method of this embodiment of this application includes: (S10) obtaining a CAN signal output by a gas sensor, where the gas sensor is disposed on a test box, and a battery cell is placed in the test box; (S20) determining a gas concentration of a predetermined gas in the test box based on the CAN signal; and (S30) sending a concentration exceedance signal when the gas concentration is higher than a concentration threshold.

Abstract: A media recommendation for a target item is provided while media information is displayed through an information display interface that includes detailed information of the target item when a display position of the media information meets a preset condition. A dynamic effect is displayed that the target item moves from the media information to a preset position in the detailed information while displaying the detailed information. The dynamic display of the target item enriches display of the target item to attract users' attention and focus, thereby improving the recommendation effect of the target item.

Abstract: A gas volume measurement apparatus configured to monitor volume of gas produced during formation of a battery includes a delivery device and a measurement device. The delivery device connects the battery and the measurement device and is configured to remove hazardous substances from gas produced by the battery and deliver the gas to the measurement device. The measurement device is configured to measure volume of the gas produced by the battery.

Abstract: This application provides a battery wetting state detection method and apparatus, a device, a system, and a medium and pertains to the field of battery technologies. The detection method may include: obtaining a three-dimensional tomographic image of a battery through neutron imaging; and determining a wetting state of the battery based on the three-dimensional tomographic image.

Abstract: Disclosed is device for calibrating oil-water two-phase flow sensor, the device includes a wellbore model, an oil-water separation mechanism, an oil-water mixing mechanism, an oil inlet mechanism and a water inlet mechanism, the oil-water separation mechanism has a mixture inlet, an oil outlet, and a water outlet. The beneficial effect of the technical scheme proposed in the disclosure is: the oil-water mixture flowing out of the wellbore model is separated by an oil-water separation mechanism, and the separated oil and water are introduced into the oil-water mixing mechanism through an oil inlet mechanism and a water inlet mechanism, respectively, for remixing, the oil-water mixture formed by re-mixing enters the wellbore model, and enters the next cycle, which can realize the reuse of oil and water, the miniaturization of the device, and reduction of the production cost of the device.

Abstract: Disclosed is device for calibrating oil-water two-phase flow sensor, the device includes a wellbore model, an oil-water separation mechanism, an oil-water mixing mechanism, an oil inlet mechanism and a water inlet mechanism, the oil-water separation mechanism has a mixture inlet, an oil outlet, and a water outlet. The beneficial effect of the technical scheme proposed in the disclosure is: the oil-water mixture flowing out of the wellbore model is separated by an oil-water separation mechanism, and the separated oil and water are introduced into the oil-water mixing mechanism through an oil inlet mechanism and a water inlet mechanism, respectively, for remixing, the oil-water mixture formed by re-mixing enters the wellbore model, and enters the next cycle, which can realize the reuse of oil and water, the miniaturization of the device, and reduction of the production cost of the device.

Abstract: A media recommendation for a target item is provided while media information is displayed through an information display interface that includes detailed information of the target item when a display position of the media information meets a preset condition. A dynamic effect is displayed that the target item moves from the media information to a preset position in the detailed information while displaying the detailed information. The dynamic display of the target item enriches display of the target item to attract users' attention and focus, thereby improving the recommendation effect of the target item.

Abstract: A semiconductor device package includes a substrate, a first coil, a dielectric layer and a second coil. The first coil is disposed on the substrate. The first coil includes a first conductive segment and a second conductive segment. The dielectric layer covers the first conductive segment of the first coil and the second conductive segment of the first coil and defines a first recess between the first conductive segment of the first coil and the second conductive segment of the first coil. The second coil is disposed on the dielectric layer. The second coil has a first conductive segment disposed within the first recess.

Abstract: An electrochemical detection method based on tracers labeling uses the technical solution involving three similar methods, and method I as a basic method comprising the steps of: (1) labeling an antibody of the analyte with a tracer; (2) labeling another antibody of the analyte with one of a pair of substances having specific affinity; (3) labeling a nano-microsphere with the other of a pair of substances having specific affinity; (4) performing electrochemical detection process. In the present invention, by utilizing the electrochemical properties of the tracers and the high sensitivity of the detection of tracers by the electrochemical method, the tracers-labeled immune complex is collected through the nano-microsphere, then the nano-microsphere with the immune complex are enriched onto the surface of an electrode through separation, which greatly improves the detection sensitivity; the method is high in stability, good in repeatability, accurate and reliable in result.

Abstract: A semiconductor device package includes a substrate, a first coil, a dielectric layer and a second coil. The first coil is disposed on the substrate. The first coil includes a first conductive segment and a second conductive segment. The dielectric layer covers the first conductive segment of the first coil and the second conductive segment of the first coil and defines a first recess between the first conductive segment of the first coil and the second conductive segment of the first coil. The second coil is disposed on the dielectric layer. The second coil has a first conductive segment disposed within the first recess.

Abstract: A frame member of a circular vibration screener provides an annular vertical frame wall, a joining rim, being provided at two lateral ends of the frame wall respectively and at least a reinforced flange, protruding from the periphery of the frame wall such that the frame member is able to increase strength and rigidity against deformation and for prolonging the life span thereof.

Abstract: This invention is concerned with an improved structure for the conventional vibro separator which features:A. A novel sereen assembly structure: An additional coarse screen (2-16 mesh) is employed for supporting purpose. It will be secured on a special designed screen frame in order to keep the screen surface in a flat manner. And then the main screen (fine mesh) can be put flatly on coarse screen. It is to be fastened by folding and pressing tight the outside edge into the position between the flanges of spacing frames without using any bolt on welding.B. A new designed ball tray assembly: A certain number of plastic rings are freely added in the ball tray as barriers to confine the tapping balls into certain groups in order to even distribute the tapping balls. And a simplified structure for ball tray assembling is designed with only putting the tray on the flange of lower spacing frame and to be held in position by the inner shoulder cutting space at the bottom of screen frame.C.