Abstract: CLLC resonant converters using full-bridge (FB) and half-bridge (HB) soft-morphing techniques are disclosed. Two forms of soft-morphing are provided: type1, steady-state rotational soft-morphing, which ensures balanced power loss and thermal stress across all power switches, and type2, dynamic soft-morphing, which facilitates smooth transitions between FB-FB, FB-HB, and HB-FB modes. Consequently, the FB CLLC resonant converter can achieve a 16× ultra-wide voltage gain range.

Abstract: In an aspect of the disclosure, an operation method, for balancing voltage of capacitors of a bridge circuit of a multi-level LLC resonant converter, includes: measuring voltages of the capacitors of the bridge circuit, an output voltage and an output current of an output load the multi-level LLC resonant converter, and an input voltage of the bridge circuit; selecting a voltage-level zone of a required output voltage of the bridge circuit according to the output voltage of the output load, and the input voltage of the bridge circuit; selecting a circuit mode, with a highest value of the required output voltage; and outputting PWM signals corresponding to the circuit mode, with a switching frequency, to switches of the plurality of capacitor-switch modules.

Abstract: A distributed generation unit (DGU) is provided. The DGU includes a meter and a processor. The meter generates a per-unit current based on the rated power value of the DGU. The processor is coupled between a control area network (CAN) bus and the circuit block. The processor causes the DGU to identify a first electrical signal at an initial time and perform a master selection process. The master selection process includes determining the delay time based on the per-unit current and the maximum per-unit current, identifying the per-unit current as the maximum per-unit current when the delay time has elapsed since the initial time, and broadcasting the maximum per-unit current and a second electrical signal through the CAN bus. The processor is further configured to perform a droop coefficient regulation process to maintain the current state of the DGU after the second electrical signal is broadcast.

Abstract: A zero-voltage soft switching (ZVS soft switching) control method and a power control circuit using the same are provided. The ZVS shot switching control method includes the following steps. A trapezoidal current control is executed to shape an inductor current into a plurality of trapezoidal waveforms.

Abstract: A connecting pipe assembly and a heat exchanger is disclosed. The connecting pipe assembly includes: a pipe; and a first flange extending towards a radial outside from an outer peripheral surface of the pipe. The pipe includes a first insertion pipe section located on one side of the first flange in an axial direction of the pipe. Thereby the quality of the heat exchanger is improved.

Abstract: An image sensor and a control method thereof. The image sensor includes pixel blocks arranged in an array. A photosensitive unit and an overflow unit are coupled to a transmission node, a reset unit and a readout unit are coupled to a floating diffusion node; and a transmission control unit is coupled between the transmission node and the floating diffusion node. The photosensitive unit converts optical signals into first/second charge signals; the transmission control unit controls a transfer path between the transmission node and the floating diffusion node, so that the second charge signal is transferred to the overflow unit in an exposure phase, and the first charge signal and the second charge signal are read out in a quantization phase; the reset unit resets the transmission node and the floating diffusion node; the readout unit reads out the first charge signal and the second charge signal.

Abstract: A file query method and apparatus, a computer device, and a communication system are disclosed, and relate to the computer field. The method includes: obtaining a file attribute of a target directory by sending a file query request that indicates to query the file attribute of the target directory, where the file attribute of the target directory indicates a file organization structure attribute of the target directory, and the file attribute of the target directory may include file attributes of a plurality of files in the target directory.

Abstract: Systems and methods for low-power double data rate (LPDDR) compatible High Bandwidth NAND (HBN) include receiving, from an application, a request associated with a memory device, the request being of a request type; issuing a first command to the memory device via a memory controller, the first command based on the request type; polling the memory device for a status of the memory device, the status associated with a readiness of the memory device for the request; determining that the memory device is ready based on the status; and issuing a second command to the memory device via a memory controller to fulfill the request.

Abstract: Embodiments of this application provide an audio processing method and an electronic device. The method includes: First, a source audio signal, a sound source position corresponding to the source audio signal in a virtual scene, and a first position corresponding to a user in the virtual scene are obtained, where the virtual scene is obtained through construction based on a real scene; and a first acoustic feature is obtained, where the first acoustic feature is obtained by converting, based on an acoustic feature at a second position in the real scene and an acoustic feature at the second position in the virtual scene, an acoustic feature at the first position in the virtual scene when the source audio signal is at the sound source position. Then, a spatial audio signal is generated based on the first acoustic feature and the source audio signal.

Abstract: An apparatus for predicting a battery health state value of a target battery module having one or more electrochemical battery cells is provided. The apparatus includes a processor and a memory. The memory has computer-executable instructions stored thereupon which, when executed by the processor, cause the apparatus to perform the following operations: obtain a machine-learning model, which has been trained with first data segments and first battery health state values corresponding to first data segments associated with a reference battery module; collect battery charging data of the target battery module over one or more charging cycles of the target battery module; extract a second data segment from the battery charging data; transform the second data segment to align with the first data segments; and input the transformed second data segment to the machine-learning model to predict a battery health state value of the target battery module.

Abstract: A battery pack active fuse control apparatus includes a battery management system and a shunt resistor, where the battery management system includes a short-circuit current detect circuit and a short-circuit current process circuit that are constantly powered. The shunt resistor and an active fuse are connected in series with a power supply loop of a battery pack. The short-circuit current detect circuit is connected to the shunt resistor and the short-circuit current process circuit. The short-circuit current process circuit is connected to the active fuse. The short-circuit current process circuit, upon receiving the short-circuit overcurrent signal, controls the active fuse to break.

Abstract: A method for large-scale prediction on water requirement of crop based on a spatiotemporal fusion model under a physical constraint, is applied to the field of prediction of water requirement of crop, wherein the method includes: acquiring multi-source data at the starting time and multi-source data for at least one sampling interval; encoding and fusing the multi-source data at the starting time and the multi-source data for at least one sampling interval by 1DCNN-MLP to obtain a comprehensive feature expression; and inputting the comprehensive feature expression into a trained spatiotemporal feature fusion model to obtain a prediction result of water requirement of crop at a target time output by the trained spatiotemporal feature fusion model, where the spatiotemporal feature fusion model includes a graph convolution network model and an Informer model.

Abstract: Provided are systems, methods, and apparatuses for assisted cache data placement. In one or more examples, systems, methods, and apparatuses include assigning a first identifier to first data based on an aspect of the first data, the first data being data moved from a cache and assigning a second identifier to second data based on an aspect of the second data, the second data being moved to a storage device based on a policy of the cache. In one or more examples, systems, methods, and apparatuses include storing the first data in a first storage location of the storage device based on the first identifier and storing the second data in a second storage location of the storage device based on the second identifier.

Abstract: A method and a memory device are provided. One or more host central processing units (HCPUs) of the memory device may receive a workload from a host application. The workload includes an identifier (ID). The workload may be distributed to a central processing unit (CPU) of the memory device based on the ID. The workload may be distributed to channels of the memory device based on the CPU.

Abstract: A NAS-based directory deletion method and apparatus, a client, and a server are provided, relating to the field of storage technologies. In the method, after receiving a batch delete instruction that is sent by a NAS client and that instructs to delete a target directory, a first NAS server in a distributed NAS server cluster generates distributed delete instructions for a plurality of subdirectories in the target directory, sends a corresponding distributed delete instruction to a NAS server in which a subdirectory is located, and sends a deletion complete response to the NAS client. According to the method, a large quantity of readdir instructions and delete instructions of the NAS client are replaced by a single batch delete instruction.

Abstract: A method includes a network attached storage (NAS) server that receives an attribute setting request sent by a client, where the attribute setting request indicates a target directory and a target attribute, the target directory includes a plurality of objects, and the objects are files or subdirectories. The NAS server performs attribute setting on the objects in the target directory based on the target attribute, where the target attribute includes one or more of an owner attribute, a read-only attribute, a hidden attribute, a time attribute, or a permission attribute. The NAS server sends a response message for the attribute setting request to the client.

Abstract: A heat exchanger and an air conditioning system having same, the heat exchanger including: a first manifold and a second manifold disposed at one and the same side of the heat exchanger; and multiple heat exchange tubes, each heat exchange tube including: two ends, the two ends respectively being a first end and a second end, the first end and second end being respectively connected to and in fluid communication with the first manifold and the second manifold; and multiple heat exchange parts, the multiple heat exchange parts including a first heat exchange part and a second heat exchange part, the first heat exchange part and second heat exchange part being respectively connected to and in fluid communication with the first end and the second end; in a lengthwise direction of the first manifold or second manifold, the ends of the multiple heat exchange tubes includes at least one pair of adjacently arranged first ends and/or at least one pair of adjacently arranged second ends.

Abstract: A display substrate includes a base substrate that includes a first display area provided with multiple sub-pixels of different colors. At least one sub-pixel includes a first electrode, a second electrode, and an organic light-emitting layer provided between the first electrode and the second electrode. A first structure is provided on a side of the first electrode of a sub-pixel of at least one target color close to the base substrate, and a surface of the first structure close to the first electrode is uneven. The first structure comprises at least one convex structure, the at least one convex structure is made of a metallic material, and the first structure further includes a second insulating layer between the at least one convex structure and the first electrode.

Abstract: A system and a method are disclosed for managing data placement and prefetching in a solid-state drive (SSD). The method includes receiving a memory access request; predicting a memory address, based on the memory access request, using a prediction model trained on access patterns; and prefetching data associated with the predicted memory address from the SSD, based on the memory access request and a data placement group.