Abstract: A stepped mesh-stacked powder-filling structure is disclosed and includes a cover plate, a first mesh plate, a second mesh plate and a wick structure. The first mesh plate is stacked on an inner surface of the cover plate along a first direction, and includes a first through opening. The second mesh plate is stacked on the first mesh plate along the first direction and includes a second through opening in communication with the inner surface through the first through opening. The second through opening is greater than the first through opening in view of the first direction, and a top surface of the first mesh plate not covered by the second mesh plate forms a first overlapping surface. The wick structure is disposed in the first and second through openings, and connected to the first mesh plate through the first overlapping surface.

Abstract: A flux-concentrating rotor structure is disclosed and includes an iron core and plural magnet components. The iron core is formed by stacking plural silicon steel sheets and includes plural magnet-receiving slots arranged along a circumferential direction. Each magnet-receiving slot has a T-shaped section. Each two adjacent magnet-receiving slots have a radial bridge, whereby each silicon steel sheet is integrally formed. The magnet components are arranged in the iron core, and correspondingly received within the magnet-receiving slots. Each magnet component includes two radial magnets and one tangential magnet. The two radial magnets are located on both sides of the tangential magnet along the circumferential direction and in contact with the tangential magnet. The two radial magnets are magnetized along the radial direction respectively and have opposite magnetizing directions. The tangential magnet is magnetized along the tangential direction.

Abstract: An inverter includes an inverter case, a plurality of power modules and a plurality of cooling fins. The inverter case includes an annular portion, a supporting portion and a cooling liquid flow channel. The cooling liquid flow channel is a sealed channel located in the annular portion and the supporting portion, and a cooling liquid inlet and an inverter case cooling liquid flow channel outlet are formed on the annular portion at two ends of the cooling liquid flow channel. The power module is arranged on the supporting portion, and the cooling fins are arranged on the cooling liquid flow channel, the fin parts of the cooling fins are respectively extended and arranged inside the cooling liquid flow channel, and the contact parts of the cooling fins are respectively extended to contact heat transfer parts of corresponding power modules.

Abstract: A magnetic element includes a magnetic core, at least one excitation winding and an auxiliary winding. The magnetic core includes at least one first magnetic leg, a second magnetic leg and a third magnetic leg. Each of the at least one magnetic leg is wound with an excitation winding, wherein a vector sum of magnetic flux passing through each of the at least one first magnetic leg is a first magnetic flux, a second magnetic flux is passing through the second magnetic leg, and a third magnetic flux is passing through the third magnetic leg. The auxiliary winding is partially or completely wound on the second magnetic leg, wherein the auxiliary winding is used to clamp the second magnetic flux.

Abstract: A battery temperature control system is disclosed. The battery temperature control system includes a cabinet, an air conditioner, a central control module and a plurality of battery modules. Each of the plurality of battery modules includes a plurality of batteries, a control unit, a fan assembly and a temperature detecting module, wherein the central control module sends a temperature controlling command to the air conditioner to activate a cold source or a heat source according to the ambient temperature, then the central control module compares and calculates a plurality of working temperature information transmitting from the plurality of battery modules, and sends a fan operation command to the each corresponding battery module, the corresponding fan assembly activates an working mode to cool or warm the temperature of the corresponding battery module, so as to adjust the working temperature of each battery module, and to achieve a dynamic temperature balance.

Abstract: A control method of a power factor correction circuit is provided. The first operating frequency of the power factor correction circuit is controlled to less than one-third of the minimum limitation frequency, the first operating frequency is controlled to less than 1?Nth of the first suppression frequency, and the second operating frequency of the power factor correction circuit is controlled to less than 1?Nth of the second suppression frequency. Consequently, at least portion of the operating frequency of the power factor correction circuit is not in the range measured by the machine so as to reduce the value of the noise of the electromagnetic interference.

Abstract: An automatic pick-and-place system is provided, including a feeding device, a visual pattern formed on a fixed part of the feeding device, a manipulator, and a processing unit. An electronic component can be held between the fixed part and a gripping part of the feeding device. A visual module on the manipulator captures an image of the visual pattern, and the processing unit calculates the coordinate value of the electronic component. Thus, the manipulator can move to the target position and pick up the electronic element according to the coordinate value.

Abstract: A casing latch structure is disclosed and includes a casing, a main body, a clamping element, a fastening element, and an abutting element. The casing includes a first wall and a second wall perpendicular to each other, a through hole disposed on the first wall, and a sliding groove disposed on the second wall. The main body includes a clamping portion, a sliding portion and a fastened portion. The sliding portion is connected between the clamping portion and the fastened portion arranged on two opposite sides of the second wall, and received in the sliding groove. The clamping element is sleeved between the sliding portion and the fastened portion. The fastening element is engaged with the fastened portion to lock or release the clamping portion. The abutting element includes an abutting portion and an embedded portion connected to each other and corresponding to the through hole and the sliding groove.

Abstract: A hanging device includes an accommodation main body, a sliding assembly, a hook, and the accommodation main body that includes two parallel sidewalls, in which a first vertical path is defined between the two sidewalls. The sliding assembly is movably connected between the two sidewalls to move relative to the main body along the first vertical path. The sliding assembly further includes a sliding rail which defines a second vertical path, and the hook is movably connected to the sliding rail to move relative to the sliding assembly along the second vertical path.

Abstract: An electric tool is powered by a battery. An electric tool includes a motor, a charging and discharging control circuit and a motor control circuit. Charging and discharging control circuit is configured to couple to a power adapter. Charging and discharging control circuit includes a direct power supply path connected to the power adapter and battery, and is configured to detect an input current from power adapter and a first load current flowing to battery and to calculate an upper limit of a second load current that can be provided to motor according to a difference between the input current and the first load current. Motor control circuit is coupled between charging and discharging control circuit and motor, and is configured to control a speed or a torque of motor according to the upper limit of second load current.

Abstract: A diagonal fan is disclosed and includes a frame and an impeller. The frame includes an inlet, an outlet, and an accommodation space. The inlet and the outlet are communicated through the accommodation space. The impeller is accommodated within the accommodation space and includes a hub, a cylindrical part, a conical section shell and a plurality of blades, wherein the cylindrical part is configured to accommodate a rotor. The cylindrical part includes a plurality of protrusion portions and a plurality of indentation portions disposed on an inner surface thereof, and the plurality of protrusion portions are abutted against an outer surface of a magnetic shell of the rotor.

Abstract: A dual-inverter assembly is disclosed and includes an elongated base, a first power module, a second power module, an input copper busbar and two output copper busbars. The elongated base includes a first elongated sidewall and a second elongated sidewall opposite to each other and extended along a first direction. The first power module and the second power module are disposed on a first side and a second side of the elongated base along the first direction, respectively. The input copper busbar is spatially corresponding to the first elongated sidewall, and electrically connected to the first power module and the second power module. The two output copper busbars are spatially corresponding to the second elongated sidewall, and electrically connected to the first power module and the second power module, respectively, so as to achieve an optimized configuration.

Abstract: A power converter includes a plurality of conversion circuits connected with each other in parallel. Each of the conversion circuits includes a transformer. The transformer of each of the plurality of conversion circuits includes a magnetic core assembly, at least one primary winding, at least one secondary winding and at least one auxiliary winding. Each magnetic core assembly includes a plurality of magnetic legs. The at least one primary winding, the at least one secondary winding and the at least one auxiliary winding are wound on the plurality of magnetic legs. The at least one auxiliary winding of one conversion circuit is serially connected with the at least one auxiliary winding of other conversion circuit to form at least one loop. The present disclosure also provides a magnetic element.

Abstract: A synchronous rectification control method for a resonant power supply includes steps as follows. First, setting an initial conduction width of a synchronous rectification switch, which is less than a maximum conduction width. Afterward, detecting a voltage waveform across two ends of a body diode of the synchronous rectification switch. Afterward, calculating a resonant frequency according to the voltage waveform. Finally, determining the maximum conduction width of the synchronous rectification switch.

Abstract: A processing path planning simulation device is provided, which includes a memory and a processor. The processor performs following operations: according to an obstacle model, multiple processing point positions, a mechanical arm model, a processing tool model, a model position relative relationship and a production strategy parameter, performing collision test simulation to generate multiple candidate poses of the mechanical arm model; performing path optimization algorithms on the multiple candidate poses to generate a pose sequence; performing an ant colony algorithm based on the pose sequence and the obstacle model to generate an optimal processing path; and based on the optimal processing path, simulating that an end point of the processing tool model on the mechanical arm model performs a virtual processing operation on the multiple processing point positions sequentially according to the multiple optimal nodes.

Abstract: A power system includes a power conversion circuit, a DC converter and an inverter. The power conversion circuit is coupled to a AC supply line and a DC supply line to convert voltage between the AC supply line and the DC supply line. The DC converter is coupled to the DC supply line and a charging device. The inverter is coupled to the AC supply line and the charging device. When the charging device provides a supply power to the inverter, the inverter is configured to convert the supply power into a recovered power and transmit the recovered power to the power conversion circuit.