A battery management system for a lawnmower that can include a first switch configured to issue a wake-up signal in response to a wake-up input, issue a battery status request signal in response to a battery status input, and issue a shut-down signal in response to a shut-down input. A first controller can be configured to, switch the second switch to an ON state to electrically connect the battery to the electrically powered device when the first controller receives the wake-up signal, cause the display to display information indicative of a status of the battery when the first controller receives the battery status request signal, and switch the second switch to an OFF state to terminate output from the battery to the electrically powered device when the first controller receives the shut-down signal.

An apparatus for supplying emergency power according to an embodiment of the present disclosure includes: a protection circuit unit connected to a battery and configured to limit an available voltage range of the battery; a bypass unit connected in parallel to the protection circuit unit and configured to form a bypass path of a current output from the battery according to an operation state of a disposed switching element; and a control unit configured to electrically connect the bypass path formed by the bypass unit by controlling the operation state of the switching element to a turn-on state.

A system for supplying adapted power to an electronic device with a reduced level of power consumption when the device is not in use includes a first power supplying module, a control module coupled to the first power supplying module, and an MCU coupled to the control module and coupled to the electronic device. The MCU is configured to switch on the first power supplying module when the first power supplying module is in a normal state, the normal state being an AC power supply coupled to the first power supplying module. The MCU detects an instant mode of the electronic device and outputs a first signal to the control module when the electronic device is in a standby mode. The control module is configured to switch off the first power supplying module when the first signal is received. A power supplying method is further provided.

The present disclosure provides a charging system and method and a power adapter. The system includes: a battery; a first rectification unit, configured to output a voltage with a first pulsating waveform; a switch unit, configured to modulate the voltage with the first pulsating waveform; a transformer, configured to output a voltage with a second pulsating waveform according to the modulated voltage; a second rectification unit, configured to rectify the voltage with the second pulsating waveform to output a voltage with a third pulsating waveform; and a control unit, configured to output the control signal to the switch unit to decrease a length of a valley of the voltage with the third pulsating waveform such that a peak value of a voltage of the battery is sampled.

Method for activating predefined functions, implemented in a host appliance integrating or linked to a wireless charging device, and including the steps of: detecting that a mobile appliance has just been positioned on a reception surface of the wireless charging device in order to be recharged; following the detection that the mobile appliance has just been positioned on the reception surface, activating or deactivating at least one predefined first function performed by the host appliance, in addition to recharging the mobile appliance; then, detecting that the mobile appliance has just been moved away from the reception surface; following the detection that the mobile appliance has just been moved away from the reception surface, activating or deactivating at least one predefined second function performed by the host appliance.

A communication device is provided with: a first communication part that is connected to an energy storage device or a power supply related apparatus and communicates with the energy storage device or the power supply related apparatus; an acquisition part that acquires information including a state of the energy storage device or the power supply related apparatus on the basis of a set timing; a change acceptance part that accepts a change in the timing and changes the timing; and a transmission part that transmits, at a timing after the change, the information acquired by the acquisition part to a first apparatus by using a second communication part communicatively connected to the first apparatus.

An estimation device includes: a derivation unit (31) configured to derive a derivation history based on a current and a voltage of a lead-acid battery and a temperature of the lead-acid battery; a first specifying unit 31 configured to specify a specific gravity of an electrolyte solution; a second specifying unit (31) configured to specify at least one degree out of: a first degree of softening of a positive electrode material; a second degree of corrosion of a positive electrode grid; a third degree of sulfation of a negative electrode; and a fourth degree of shrinkage of a negative electrode material based on the specified specific gravity, the derived derivation history, and at least one relationship selected from the group consisting of: a first relationship between the specific gravity and a first history, and the first degree; a second relationship between the specific gravity and a second history; and the second degree; a third relationship between the specific gravity and a third history; and the third degree; and a fourth relationship between a fourth history and the fourth degree; and an estimation unit (31) configured to estimate a degree of deterioration of the lead-acid battery based on the specified at least one degree.

There is provided a device or the like capable of improving the convenience of reproduction under various conditions of the characteristics of a secondary battery by using a simulated battery. Based on the communication between the electronics and/or the charger coupled to the electronics, and the simulated battery control device, the operation of the simulated battery mounted on the electronics is controlled, and the voltage corresponding to the current command value is applied to the specified load. Then, the operating characteristic information corresponding to the operating characteristic of the specified load corresponding to the applied voltage is output to the output interface of the electronics. The operating characteristics of the specified load can be grasped when voltage corresponding to the current command value is applied to the specified load of the electronics, and therefore the convenience of the user of the electronics can be improved.

A charging control method includes: obtaining a battery electric quantity of the terminal device and current state information of the terminal device; determining a target charging strategy according to the battery electric quantity and/or the current state information; and controlling the terminal device to be charged according to the target charging strategy.

An operation management device includes: an information acquisition unit configured to acquire information necessary for charging an on-vehicle battery of a vehicle entering a charging facility in which charging spaces coexist, power transmission devices having different amounts of transmission power being installed in the charging spaces; and an optimization unit configured to optimize a charging schedule for increasing a charge amount of the on-vehicle battery to a target charging level by charging with an available power transmission device in the charging spaces based on the acquired information so that power consumption in the charging facility is suppressed to a maximum allowable power amount or less.