Abstract: A locking device for connecting a first housing to a second housing is provided, wherein the first housing and the second housing are arranged along a first direction. The locking mechanism includes a first hook, a second hook, a movable member, and a driving member. The first hook and the second hook are affixed to the first housing, and respectively have a first engaging recess and a second engaging recess. The first engaging recess and the second engaging recess are arranged along the first direction. The movable portion has an engaging portion. The driving member is connected to the second housing and the movable member, and is configured to drive the movable member to move relative to the second housing. When the first housing is affixed to the second housing via the locking mechanism, the engaging portion is accommodated in the first engaging recess.

Abstract: A heating device includes a first capacitor, a first switch, a second switch, a second capacitor, a third capacitor, a coil and a controller. The first and second switch are coupled in series at a first node, and are coupled with the first capacitor in parallel. The second capacitor is coupled to the first switch. The third capacitor is coupled to the second switch, and is coupled to the second capacitor at a second node. The coil is coupled between the first and the second node. The controller outputs a first and a second control signal to the first switch and the second switch, respectively. After the heating device received a voltage and a starting command, the controller outputs the first and the second control signal to turn on or off the first and the second switch respectively. The duty cycle of the first signal is lower than 50%.

Abstract: A power conversion circuit is provided. According to the topologies of power conversion circuits and the corresponding control manners of the present disclosure, the output voltage is greatly reduced relative to the input voltage, and thus the function of voltage reduction is achieved. Moreover, a voltage-second product of the time and the voltage across the first output inductor and a voltage-second product of the time and the voltage across the second output inductor are both greatly reduced. Accordingly, the inductance, volume and loss of the first output inductor and the second output inductor are greatly reduced. Therefore, the voltage regulation module may receive the low output voltage outputted by the power conversion circuit, thereby reducing the overall volume of the voltage regulation module and increasing the power conversion density and conversion efficiency of the voltage regulation module.

Abstract: The present disclosure provides an assembly structure for providing power for a chip. The assembly structure includes a circuit board configured to provide a first electrical energy; a chip provided with at least one electrical energy input terminal; and a first power converting module provided with at least one power output terminal. The first power converting module is electrically connected to the circuit board and the chip, converts the first electrical energy to a second electrical energy, and supplies the second electrical energy to the chip. The circuit board, the chip and the first power converting module are stacked; and a projection of the at least one electrical energy input terminal of the chip on the circuit board and a projection of the at least one the power output terminal of the first power converting module on the circuit board, are at least partially overlapped.

Abstract: A hybrid power conversion circuit includes a high-side switch, a low-side switch, a transformer, a resonance tank, a first switch, a second switch, a first synchronous rectification switch, a second synchronous rectification switch, and a third switch. The resonance tank has an external inductor, an external capacitance, and an internal inductor. The first switch is connected to the external inductor. The second switch and a first capacitance form a series-connected path, and is connected to the external capacitance. The first and second synchronous rectification switches are respectively coupled to a first winding and a second winding. The third switch is connected to the second synchronous rectification switch. When an output voltage is less than a voltage interval, the hybrid power conversion circuit operates in a hybrid flyback conversion mode, and otherwise the hybrid power conversion circuit operates in a resonance conversion mode.

Abstract: An impeller includes a hub, an outer ring, a plurality of first blades and a plurality of second blades. The plurality of first blades are arranged around the hub at intervals. Each of the plurality of first blades passes through the outer ring, extends inward from the outer ring, and is connected to the hub. The plurality of second blades are arranged around the hub at intervals. Each of the plurality of second blades passes through the outer ring. At least one of the plurality of second blades is disposed between the plurality of first blades. A length of each of the plurality of second blades is between 10% and 45% of a length of each of the plurality of first blades.

Abstract: The present disclosure relates to a surface-mounted heat sink and a power module using the same. The power module includes a circuit board, a magnetic element and at least one power device. The magnetic element is disposed at an upper side of the circuit board, the at least one power device is disposed on a surface of the circuit board and located between the magnetic element and a lower side of the circuit board. The surface-mounted heat sink is disposed on the surface of the circuit board and adjacent to the at least one power device. A top surface disposed on one side of the magnetic element and the surface of the circuit board form a limiting height, the surface-mounted heat sink has a first height formed between a sucked surface and a surface-mounted surface thereof, and the limiting height is greater than or equal to the first height.

Abstract: The present disclosure provides a multi-phase coupled inductor, a multi-phase coupled inductor array and a two-phase inverse coupled inductor. The multi-phase coupled inductor includes a magnetic core having longitudinal middle columns and windings respectively wound around the longitudinal middle columns. A magnetic flux direction of a DC magnetic flux generated by a current flowing through any one of the windings is opposite to a magnetic flux direction of a DC magnetic flux generated by a current flowing through other one of the windings, on the longitudinal middle column corresponding to the other one of the windings.

Abstract: An insulation resistance detection system for an electric vehicle is used to detect a positive insulation resistance between a positive electrode of a battery of the electric vehicle and an equipment grounding point, and detect a negative insulation resistance between a negative electrode of the battery and the equipment grounding point. The insulation resistance detection system includes a negative detection circuit, a positive detection circuit, and a control unit. The control unit controls the negative detection circuit to be charged to generate a first capacitor voltage, and controls the positive detection circuit to be charged to generate a second capacitor voltage. The control unit determines whether the negative insulation resistance is abnormal according to the first capacitor voltage and a battery voltage of the battery, and determines whether the positive insulation resistance is abnormal according to the second capacitor voltage and the battery voltage.

Abstract: A heating device includes a first capacitor, a first switch, a second switch, a second capacitor, a third capacitor, a coil and a controller. The first and second switch are coupled in series at a first node, and are coupled with the first capacitor in parallel. The second capacitor is coupled to the first switch. The third capacitor is coupled to the second switch, and is coupled to the second capacitor at a second node. The coil is coupled between the first and the second node. The controller outputs a first and a second control signal to the first switch and the second switch, respectively. After the heating device received a voltage and a starting command, the controller outputs the first and the second control signal to turn on or off the first and the second switch respectively. The duty cycle of the first signal is lower than 50%.

Abstract: An insulation resistance detection circuit is coupled to a positive end and a negative end of a DC power source, and is used to detect a positive insulation resistance between the positive end and a ground point and detect a negative insulation resistance between the negative end and the ground point. A detection unit sets a first estimated resistance and a second estimated resistance, and acquires a first voltage based on turning on the switch and acquires a second voltage based on turning off the switch. The detection unit calculates a third voltage and a fourth voltage according to the first estimated resistance and the second estimated resistance so as to detect the positive insulation resistance and the negative insulation resistance when the third voltage is equal to the first voltage and the fourth voltage is equal to the second voltage.

Abstract: A transformer is provided, including a core, a primary conductor, a magnetic member, and a secondary conductor. The core includes a central pillar and at least one lateral pillar. An accommodating space is formed between the central pillar and the lateral pillar. The primary conductor, the magnetic member, and the secondary conductor are disposed in the accommodating space. The primary conductor surrounds the central pillar. The magnetic member surrounds the primary conductor, and the secondary conductor surrounds the magnetic member. The magnetic member is disposed between the primary conductor and the secondary conductor, and is flexible.

Abstract: A bus bar assembly is provided and includes a first linking bus bar, a second linking bus bar and plural power connectors. The first linking bus bar includes a first main bar, a first bending part and a first conducting part. The first bending part connects between the first main bar and the first conducting part. The second linking bus bar is disposed corresponding to and isolated from the first linking bus bar, and includes a second main bar, a second bending part and a third conducting part. The second bending part connects between the second main bar and the third conducting part. The power connectors are electrically coupled with the first main bar and the second main bar, respectively.

Abstract: The present disclosure provides a master-slave robot arm control system and method. The control method includes steps of: (a) providing a master and a slave robot arms; (b) executing a robot arm demonstration task, wherein the step (b) includes steps of: (b1) utilizing the slave robot arm to output a force feedback; (b2) generating an action command by operating the master robot arm; (b3) calculating and generating a movement command; (b4) controlling the slave robot arm to move and to generate a movement trajectory and the force feedback correspondingly; (c) repeating the step (b) to collect a plurality of movement trajectories of the slave robot arm; (d) utilizing a statistic module to analyze the plurality of movement trajectories; (e) generating an optimized trajectory of the slave robot arm; and (f) controlling the slave robot arm to execute a robot arm task.

Abstract: A sliding device includes: lower balls arranged in a lower gap between a lower rail and an upper rail; an upper ball arranged in an upper gap; a first retainer arranged in the lower gap being one of the lower gap and the upper gap. The first retainer includes: a pair of first ball holding parts and a pair of second ball holding parts provided at the opposite ends of a main body for respectively holding the lower balls in a rollable manner; a pair of connection parts each connecting corresponding one of the first ball holding parts and corresponding one of the second ball holding parts to each other. The upper ball is arranged, in the upper gap, in a region corresponding to a predetermined distance between the two lower balls respectively held by the first ball holding part and the second ball holding part.

Abstract: A power system includes a power module, an electronic load and a system board. The power module includes a first surface, a second surface, a switch and a plurality of conductive parts, wherein the switch is disposed on the first surface of the power module and the plurality of conductive parts are disposed on the second surface of the power module. The electronic load includes a plurality of conductive parts. The power module and the electronic load are disposed on two opposite sides of the system board, the power module delivers power to the electronic load through the system board, and gaps and networks of the plurality of conductive parts of the power module correspond to those of the plurality of conductive parts of the electronic load.

Abstract: A laser soldering system includes a laser source module, a polarization adjusting assembly, a temperature sensor, and a controller. The laser source module is configured to emit a laser beam. The polarization adjusting assembly includes a plurality of polarization elements and at least one stepping motor. The polarization elements are configured to split the laser beam into a Gaussian beam and a ring-shaped beam. The Gaussian beam illuminates the first element, and the ring-shaped beam is illuminates the second element. The stepping motor is configured to adjust a size of the ring-shaped beam. The temperature sensor is configured to monitor temperatures of the first element and a temperature of the second element. The controller is electrically connected to the temperature sensor, the laser source module, and the polarization adjusting assembly.