A wireless charging system for charging a secondary battery, the wireless charging system including: a central sensor configured to sense a swelling of the secondary battery; a peripheral sensor on a peripheral portion of the central sensor and configured to sense the swelling of the secondary battery; and a sensitivity ratio measurement component configured to measure a ratio of sensitivity of the peripheral sensor to sensitivity of the central sensor, wherein the sensitivity ratio measurement component is configured to stop a charging progress in response to the measured ratio of sensitivity of the peripheral sensor to sensitivity of the central sensor being greater than a preset ratio.

A energy storage system includes a power supply device, a main battery and a backup battery, and a power supply method of the energy storage system includes: when the power supply device works normally, a load is powered and the backup battery is floatingly charged by the power supply device, and the main battery is in standby mode; when the power supply device stops supplying power, the load will be powered by the backup battery, and meanwhile, the main battery will be triggered to switch from the standby mode to a backup mode to start supplying power to the load; when an output power of the main battery is equal to a power of the load, an output power of the backup battery is zero and the backup battery is in a bypass state.

The present disclosure provides systems and methods for controlling an electrical system. The electrical system includes a plurality of backup power sources, such as an electric vehicle battery, a photovoltaic system, and an energy storage system. The electrical system includes a service panel electrically coupled to a plurality of electrical loads. The electrical system includes an energy control system electrically coupled to the plurality of backup power sources, the service panel, and a utility grid. The energy control system converts to a plurality of settings based on the number of available backup power sources. The energy control system determines the availability of the backup power sources according to a predetermined protocol such that one or more backup power sources are prioritized over other backup power sources.

One aspect of the present disclosure provides a power source controller including a first battery pack connector, a working machine connector, and a power supply control device. The first battery pack connector is configured to be coupled to a first battery pack including a rechargeable battery. The working machine connector is configured to be detachably coupled to an electric working machine driven by an electric power of the first battery pack. The power supply control device is configured to supply the electric power of the first battery pack to the electric working machine in response to fulfillment of a first condition. The power supply control device is configured to transmit a dummy command signal to the first battery pack in response to fulfillment of a second condition.

According to an embodiment, a storage battery management device includes: a memory configured to store therein storage battery characteristics of a storage battery unit as a storage battery characteristics table; and one or more processors coupled to the memory. The one or more processors are configured to: acquire the storage battery characteristics based on storage battery information output from the storage battery unit; update the storage battery characteristics table based on the acquired storage battery characteristics; and estimate SOC of the storage battery unit by referring to the updated storage battery characteristics table.

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.

Disclosed herein are systems and methods for energy management. A system, such as a vehicle, includes a plurality of energy storage units that include a supercapacitor and an electrochemical battery. The system includes plurality of energy storage units including a supercapacitor and an electrochemical battery, the supercapacitor comprising a plurality of selectable power sources. The system includes a processor configured to detect a connection of an external charging system to recharge at least one of a supercapacitor and the electrochemical battery, wherein the supercapacitor comprises selectable power sources; in response to detecting the connection of the external charging system, determine whether a fault exists and is associated with at least one of charging or discharging; and control the charging the supercapacitor based on whether the fault exists.

Disclosed herein are systems and methods for energy management. A system, such as a vehicle, includes a plurality of energy storage units that include a supercapacitor and an electrochemical battery. The system includes plurality of energy storage units including a supercapacitor and an electrochemical battery, the supercapacitor comprising a plurality of selectable power sources, and an adder module including a processor. The processor is configured to execute instructions to control a sensor to measure power provided by at least one of the supercapacitor and the electrochemical battery, receive information identifying regenerated power from the regenerative power generator, and control at least one switch to provide at least a portion of the regenerated power to at least one of the supercapacitor and the electrochemical battery for charging.

Disclosed herein are systems and methods for energy management. A system, such as a vehicle, includes a plurality of energy storage units that include a supercapacitor and an electrochemical battery. The system includes an energy controller that identifies a safety threshold associated with at least a subset of the energy storage units. The energy controller tracks historical power draw from the plurality of energy storage units over time in power tracking data, and identifies a power draw based on the power tracking data. The energy controller switches between a first configuration and a second configuration based on the identified power draw crossing the safety threshold. The first configuration is configured for drawing power from the electrochemical battery and disconnecting from the supercapacitor, while wherein the second configuration is configured for drawing power from the supercapacitor and disconnecting from the electrochemical battery.

A method for powering an electric vehicle including an electrochemical battery and one or more supercapacitor batteries includes determining self-discharge rate data for the one or more supercapacitor batteries and, in response to the self-discharge rate data satisfying at least one threshold condition, notifying a user to charge the one or more supercapacitor batteries, otherwise performing operations including: measuring current within a first path connecting the electrochemical battery to the electric vehicle; storing data representing the measured current in a database; determining a current use pattern from stored current data in the database; and in response to the current use pattern satisfying a first switching condition, switching in the one or more supercapacitor batteries in place of the electrochemical battery.