A request is received for a higher torque from a torque controller than is possible from a power supply. The torque controller is coupled to a motor and the power supply, and the motor is coupled to an actuator. The actuator ultimately establishes resistance for a user in an exercise. An energy storage device is discharged to the motor in order to generate the higher torque, wherein the energy storage device is indirectly coupled to the torque controller.

In general, one or more loads on a vehicle can be connected to both a first voltage source on the vehicle and a backup vehicle power system on the vehicle. If the voltage provided by the first voltage source to the one or more loads satisfies a voltage threshold, the backup vehicle power system does not provide power to the one or more loads. However, if the voltage provided by the first voltage source to the one or more loads falls below the voltage threshold, the backup vehicle power system provides power to the one or more loads.

A power supply circuit includes a thermoelectric conversion element configured to generate electric power when it is differentially heated, an adjustable current circuit configured to draw a current from the thermoelectric conversion element and resultantly output a constant current over a period of time, a voltage conversion circuit configured to output a voltage based on the current output by the adjustable current circuit, and a control circuit configured to control the adjustable current circuit to change a target value of the constant current output by the adjustable current circuit.

A package deposit enclosure designed for public use is powered by an efficient storage battery and photovoltaic cell array. These unique features allow the package deposit enclosure to be placed in locations where no power is available, but where there is frequent human traffic. Sensing and wireless data communication features allow the unit to be emptied less often than typical package delivery enclosures. Wireless communication also allows users' access to real-time information. On board power enables other functions, such as lighting and audio, to enhance device functionality.

A display cart includes a pedestal, a lifting frame, and a power supply apparatus including a battery arranged within the pedestal and configured to supply power to an electric apparatus, an external power supply configured to supply power to the battery and/or the electric apparatus, and a capacity management system. The capacity management system includes a control device, a power delivery device, and a capacity statistic device. The control device determines output power of the electric apparatus. The capacity statistic device determines a remaining capacity in the battery, calculates a remaining power supply duration according to the output power of the electric apparatus, and sends a statistic result to the control device. The control device further controls the power delivery device to supply power to the electric apparatus according to the statistic result.

A distributed energy management system (EMS) for supplying power to a set of drivers that charge and discharge a set of electrochromic devices is described. One distributed EMS includes an external power supply interface to couple to an external power supply, a multi-device boost power supply comprising a set of batteries, and a driver interface to supply power to a set of drivers that charge and discharge a set of electrochromic devices. The distributed EMS also includes a communication subsystem to communicate with the set of drivers and EMS circuitry to supply power to the set of drivers, via the driver interface, based on a power state of the multi-device boost power supply and a state of the set of electrochromic devices.

An energy store is described. The energy store includes at least one storage cell and one storage cell management system, which includes a charge distribution circuit for monitoring the charging and discharging of the storage cell, the energy store being shiftable by the storage cell management system into an active state or into a passive state, the storage cell management system including a logic circuit, including a switch for switching between the active state and the passive state and the switch being switchable by inserting the energy store into a guide. An energy storage system including such an energy store and a guide, is also described.

An electronic control circuit with a backup energy source subassembly for an e-latch assembly and a method of operating the backup energy source subassembly are disclosed. The electronic control circuit includes a control unit including a computing module and a memory for electrically coupling to a plurality of sensors and to a main power source. The backup energy source subassembly is electrically coupled to the control unit for providing electrical energy to the electronic control circuit in response to one of a failure and interruption of the main power source. An output module is electrically connected to the backup energy source subassembly and to the main power source for driving an actuation group. The backup energy source subassembly includes a backup low voltage source and a boost-buck converter configured to selectively supply voltage to and selectively amplify voltage from the backup low voltage source.

A circuit power supply management method and system for a flowmeter, and a flowmeter. The method includes: obtaining an intermittent circuit with a highest priority in an application list as a circuit to be run; obtaining a first priority and a first power of the circuit to be run; obtaining a currently available second power, and running the circuit to be run if the second power is greater than or equal to the first power, or obtaining, from a running queue, a third power with a priority lower than a priority of the circuit to be run; running the circuit to be run if a sum of the second power and the third power is greater than or equal to the first power, or if the sum of the second power and the third power is less than the first power, obtaining, from the application list, an intermittent circuit with a priority lower than the priority of the circuit to be run, as the circuit to be run and performing the step of obtaining the first priority and the first power of the circuit to be run. With the method, prioritized execution of an intermittent circuit with a high priority can be realized, and the requirement for simultaneous running of functional circuits is met, and meanwhile there is no need to add an extra intrinsically safe power supply, the cost is low and the circuit is simple.

A power management system includes a generator, a meter mounted transfer switch, and a power management module. The generator includes a controller positioned in the housing of the generator. The generator connects to the power management module to provide power to one or more electrical loads. The controller is configured to selectively disconnect at least one of the electrical loads by communicating, via a wireless gateway, to a transfer switch of the power management module to move between first and second positions for connecting the generator to the one or more electrical loads.