A power module includes: a first substrate having an outer surface and an inner surface; a semiconductor die coupled to the inner surface of the first substrate; a second substrate having an outer surface and an inner surface, the semiconductor die being coupled to the inner surface of the second substrate; and a first electrically conductive spacer coupled to inner surface of the first substrate and to the inner surface of the second substrate.

The present disclosure provides a power supply circuit, a sensing device and an application thereof, comprising: a transducer; an energy storage assembly operably connected to the transducer; a power supply assembly electrically connected between the energy storage assembly and a power consumption module so that the energy storage assembly does not supply power to the power consumption module when the power consumption module is in a non-powered state and the output voltage is within a specified voltage interval; and the energy storage assembly is caused to supply power to the power consumption module when the output voltage is within a non-specified voltage interval.

A protection circuit of battery and an operating method thereof are disclosed. The protection circuit of battery has a current sensing pin coupled to a path node. The path node, a battery cell and a protection switch are coupled in series. The protection circuit includes a disconnection detection circuit and a first over-current protection circuit. The disconnection detection circuit is coupled to the current sensing pin and provides a first detection signal. The first over-current protection circuit is coupled to the disconnection detection circuit and generates a first protection signal according to the first detection signal to turn off the protection switch. When the current sensing pin is disconnected from the path node, the first detection signal causes the first over-current protection circuit to generate the first protection signal.

A control method of a power supply circuit is provided. The power supply circuit includes an AC/DC conversion circuit, a DC/DC conversion circuit, a BOOST circuit, and a BUCK/BOOST circuit that are commonly connected to a DC bus, a first device is connected to a first end of the AC/DC conversion circuit, and a DC load is connected to a second end of the BUCK/BOOST circuit. A bus voltage of the DC bus and a photovoltaic output voltage of a first photovoltaic module are obtained, and when the photovoltaic output voltage is greater than a preset input voltage, operating states of the AC/DC conversion circuit, the DC/DC conversion circuit, the BOOST circuit, and the BUCK/BOOST circuit are respectively controlled according to demand power of the first device, demand power of a battery module, demand power of a DC load, and the bus voltage.

A mobile power source system with maintenance charging and a method of maintenance charging the mobile power source system are disclosed. In one aspect, the mobile power source system includes a bidirectional inverter electrically connected to the battery and configured to convert an alternating current (AC) power to direct current (DC) power in a first direction and convert DC power to AC power in a second direction. The system also includes a first switch configured to provide grid power from an electrical grid to the bidirectional inverter when switched on and stop providing the grid power to the bidirectional inverter when switched off. The system further includes a second switch configured to provide battery power from the bidirectional inverter to a load when switched on and stop providing the battery power to the load when switched off.

Power packs configured to supply power to a common load are provided. A power pack includes a first power source; a second power source; at least one adapter configured to receive the common load and electrically couple the common load to at least one of the first power source or the second power source for supplying power to the common load; a tether interface electrically coupled to the at least one adapter, the first power source, and the second power source and configured to arrange the first power source and the second power source in series or in parallel; and a control circuit comprising at least one controller for performing a plurality of operations.

A lawn mower includes a drive wheel, a mowing deck including a cutting blade, a wheel motor operable to rotate the drive wheel, a cutting blade motor operable to rotate the cutting blade, and a battery system. The battery system includes a battery configured to power the wheel motor and the cutting blade motor and a battery controller communicably coupled to the battery. The battery controller includes one or more processors and memory storing instructions that, when executed by the one or more processors, cause the one or more processors to determine an electric current threshold for the battery, broadcast a message comprising the electric current threshold, compare an actual electric current of the battery to the electric current threshold, and adjust an operation of the battery system in response in response to determining that the actual electric current of the battery exceeds the electric current threshold for a predetermined amount of time.

A first electronic device receives a first operation, where the first operation is used to switch a power role in a charging process; and sends a first instruction to a second electronic device based on the first operation, where the first instruction indicates the second electronic device to switch to a charged device. Based on the first operation, the first electronic device adjusts the first signal line to be a signal line for the first electronic device to send data to the second electronic device, adjusts the second signal line to be a signal line for the first electronic device to receive data sent by the second electronic device, and adjusts an output voltage of the first electronic device to switch the first electronic device to a power supply device.

A battery pack assembly configured to supply power to a common load includes a backpack wearable on a back of a user, at least one battery arranged in the backpack and electrically coupled to the common load via a tether, and a communications interface operable between the battery pack and the common load. The communications interface is configured to perform one or more operations, including but not limited to receiving and transmitting operational information to and from the battery pack and the common load, the operational information relating to at least one of the battery pack or the common load.

A system includes: an inverter configured to convert DC power to AC power, wherein the inverter includes: a power module including: a first substrate, a second substrate including a source plane and a gate plane separated from the source plane by a full trench, the source plane including a step trench, and the gate plane including an electrical connection through the second substrate to a gate input connection of the power module, a semiconductor die disposed between the first substrate and the second substrate, the step trench formed in a portion of the source plane corresponding to an edge of the semiconductor die, and the semiconductor die including a gate connected to the gate plane, and a sinter element disposed between the semiconductor die and the second substrate to connect the semiconductor die to the second substrate; a battery; and a motor.