Abstract: A power module includes first and second electrode terminals adapted to electrically connect to a power source, a first switch element, a second switch element, a first Kelvin source pin, and a second Kelvin source pin. The first switch element is electrically connected to the first electrode terminal. The second switch element is electrically connected between the first switch element and the second electrode terminal and includes a drain and a source electrically connected to the first switch element and the second electrode terminal respectively. The first Kelvin source pin is electrically connected to the source of the second switch element and is adapted to receive a gate drive signal for driving the second switch element. The second Kelvin source pin is electrically connected to the source of the second switch element and is configured to be electrically connected to a snubber circuit.

Abstract: The present application provides a monitoring and protection system and an energy storage device. The monitoring and protection system is applied to at least one battery module and includes a temperature monitoring apparatus, a deformation monitoring apparatus, and a control apparatus. The temperature monitoring apparatus includes a plurality of grating temperature sensors, and each grating temperature sensor is arranged on a corresponding battery module to obtain a current temperature of the battery module. The deformation monitoring apparatus obtains a current deformation amount of each battery module, and includes a plurality of grating strain sensors, and each grating strain sensor are arranged on a corresponding battery module. The control apparatus controls a protective unit to perform a corresponding protective action according to the current temperature and current deformation amount.

Abstract: An embedded power supply apparatus is partially buried in an enclosed structure, is configured to provide a first DC voltage to a plurality of electronic devices, and includes a first power conversion circuit, a plurality of switch circuits, a human-machine interface module and a control circuit. The first power conversion circuit is configured to convert an input AC voltage into the first DC voltage and provide the first DC voltage to the switch circuits. The switch circuits each is configured to selectively transmit the first DC voltage to a corresponding electronic device of the electronic devices according to a corresponding first control signal of a plurality of first control signals. The control circuit is configured to receive a second control signal generated by the human-machine interface module, and generate the first control signals to the switch circuits according to the second control signal.

Abstract: A power supply device is disclosed and includes a housing, a power board, an output terminal and a DCDC conversion module. The housing includes an accommodation space, and a first opening of a rear plate in communication with the accommodation space. The power board disposed in parallel to the lower plate is at least partially accommodated in the accommodation space, and a peripheral edge is disposed adjacent to the rear plate. The output terminal is disposed in parallel to the lower plate, and passes through the first opening of the rear plate. The DCDC conversion module is accommodated in the accommodation space and includes a primary circuit, a transformer and a secondary circuit. The transformer and the secondary circuit are arranged on the power board in sequence. The secondary circuit is arranged on part of the power board existing the peripheral edge and electrically connected to the output terminal.

Abstract: A magnetic element includes at least one first air gap. A first portion of the first air gap is arranged between the first projection line and the second projection line. A second portion of the first air gap is beyond the region between the third projection line and the fourth projection line. Due to the air gap, the dielectric constant between the first end part of the winding and the magnetic leg and the dielectric constant between the second end part of the winding and the magnetic leg are reduced. Moreover, the electric field distribution of the first end part and the second end part will be more uniform, and the partial discharge extinction voltage will be increased. The volume and the cost of the magnetic element are both reduced. In addition, the equalizing rings are not required. Consequently, the fabricating process of the magnetic element is simplified.

Abstract: An energy storage system and a control method thereof are provided. The control method includes steps of: (a) providing an energy storage system including N energy storage modules; (b) obtaining a first sequence and a second sequence by sorting the N energy storage units based on the quantity of electricity in descending order and ascending order respectively; (c) determining a required power of the power grid according to a grid frequency; (d) when the required power is positive, controlling first X energy storage units in the first sequence to discharge for collectively providing an electrical energy, having same magnitude with the required power, to the power grid; and (e) when the required power is negative, controlling first Y energy storage units in the second sequence to collectively receive an electrical energy, having same magnitude with the required power, from the power grid for charging.

Abstract: An electric motor includes a motor main body and an inverter. The inverter is axially stacked on one end of the motor main body, and the inverter includes a gate driver, a control circuit, a capacitor module, a DC bus bar, a plurality of power modules and a plurality of AC bus bars. The power module includes a plurality of AC output terminals, a plurality of DC input terminals and a plurality of signal terminals, and the AC bus bars are respectively connected to corresponding AC output terminals and extend downward to a motor coil of the motor main body. The power modules and the corresponding DC input terminals are annularly arranged around the capacitor module, the DC bus bar is extended and electrically connected to the corresponding DC input terminals and the capacitor module.

Abstract: A bi-level dimming LED power supply equipment adjusts the brightness of a plurality of LED lights according to whether an external detection switch is triggered turned on. The LED power supply equipment includes a plurality of LED power supplies, and the LED power supplies respectively include an input end and an output end. The input end receives an input voltage, and the output end includes a bus positive end, a bus negative end and a dimming end. The dimming end is commonly coupled to a first end of the external detection switch, and one of the bus positive end or the bus negative end is commonly coupled to a second end of the external detection switch and one end of the LED lights, and the other one of the bus positive end or the bus negative end is respectively coupled to the other ends of the LED lights.

Abstract: A PCB pad for a SMT process is combined on a PCB. The PCB pad includes an insulation body and a metal reflow portion disposed on the insulation body. The metal reflow portion is located on the side of the insulation body adjacent to the PCB. The metal reflow portion is not electrically connected with the PCB. Thus, the PCB pad may support electronic components of the PCB and prevent the electronic components from being damaged by an external pressure.

Abstract: A detecting system for an unauthorized device having a movable locator is disclosed. The movable locator includes a location positioning unit, a signal sniffing unit, a signal collecting unit, and a device positioning unit. The location positioning unit detects a locator position of the movable locator. The signal sniffing unit detects Wi-Fi signal of an unauthorized device and generates a sensing report message. The signal collecting unit adds multiple sensing report messages to a sensing report record collection. The device positioning unit organizes multiple positioning combinations based on the content of the sensing report record collection, generates multiple positioning results respectively based on the multiple positioning combinations, and performs a weighting process to the multiple positioning results to generate a final positioning result of the unauthorized device.

Abstract: A charging apparatus for use with an electric vehicle includes a power transmission path, a switch, a first controller, a communication unit, and a second controller. The switch is disposed on the power transmission path. The communication unit is coupled to a second connection port. The first controller is coupled to the power transmission path, the switch, the second controller, and the communication unit. When the second controller receives a first request from a power management system and correspondingly notifies the first controller, the first controller switches from a first signal to a second signal to communicate with the electric vehicle and turns off the switch, and when the first controller receives a first EV notification provided from the electric vehicle, the controller turns on the switch.

Abstract: An electrical device includes a container, a conversion unit, an outer cover and an inner cover. The container is provided with an inner bottom surface and an inner which define an accommodating channel together. An inlet of the accommodating channel is opposite to the inner bottom surface. The conversion unit is disposed within the accommodating channel. The outer cover covers the inlet of the accommodating channel. The inner cover is disposed within the accommodating channel, and located between the conversion unit and the outer cover. One part of the conversion unit extends to the opening, and at least one outer edge of the inner cover is connected to an inner wall of the container.

Abstract: A Totem Pole PFC circuit includes at least one fast-switching leg, a slow-switching leg, and a control unit. Each fast-switching leg includes a fast-switching upper switch and a fast-switching lower switch. The slow-switching leg is coupled in parallel to the at least one fast-switching leg, and the slow-switching leg includes a slow-switching upper switch and a slow-switching lower switch. The control unit receives an AC voltage with a phase angle, and the control unit includes a current detection loop, a voltage detection loop, and a control loop. The control loop generates a second control signal assembly to respectively control the slow-switching upper switch and the slow-switching lower switch. The control loop controls the second control signal assembly to follow the phase angle, and dynamically adjusts a duty cycle of the second control signal assembly to turn on or turn off the slow-switching upper switch and the slow-switching lower switch.

Abstract: An illumination system for a projector includes a light engine module, a light source module, a reflective mirror, a beam splitter, a phosphor wheel, and a lens assembly. The light source module can emit blue light along a first direction. The reflective mirror may reflect the blue light such that the blue light transmits in a second direction. A reflective region of the phosphor wheel can reflect a first portion of the blue light, and a first wavelength conversion region of the phosphor wheel can to activate a second portion of the blue light to form first band light. The lens assembly is configured to allow the first band light to pass through. The reflective region of the beam splitter is configured to reflect the first portion of the blue light and the first band light to the light engine module along the first direction.