A method for estimating the state of health of an exchangeable rechargeable battery. The method includes: i. determining a remaining capacity of the battery during a charging operation, in such a manner, that a first charging value is ascertained by measuring an open-circuit voltage, as long as no charging current or only a minimal charging current is flowing; at least one further charging value is ascertained by measuring the charging current in specific time intervals, until the charging operation is completed; and a sum of the ascertained charging values is calculated; ii. determining a remaining performance of the battery during the charging operation in such a manner, that after a predefined battery voltage is reached, the charging current is briefly changed, and the respective battery voltage is measured; and an impedance of the battery is calculated from the quotient of the difference of the measured charging currents and battery voltages.

A method for controlling a lower limit of a state-of-charge state of a power battery, and a vehicle are provided, the method includes: detecting, by a detection unit, a minimum ambient temperature and a minimum power battery temperature in at least one time period; evaluating, by an evaluation unit, a minimum power battery temperature in a preset time period after the at least one time period according to the minimum ambient temperature and the minimum power battery temperature in the at least one time period; determining, by a processing unit, a minimum state-of-charge value that meets a start-up power requirement of a vehicle engine at the minimum power battery temperature in the preset time period, and adjusting a lower limit value of the state-of-charge according to the minimum state-of-charge value, in order that the vehicle can be powered-up by a state-of-charge value of the power battery at low temperature environment.

The invention relates to a feedback current control device and aerial equipment. The feedback current control device includes: a feedback current capture module, located on a current capture circuit and configured to capture a feedback current; a first switch module, configured to turn on or off the current capture circuit; and a control module, including: a first receiving unit, configured to receive a first voltage at one end of the driver and a second voltage at one end of a battery on a feed circuit and a temperature of the battery; and a first control unit, configured to control the first switch module to turn on the current capture circuit for capturing the feedback current when the difference between the first voltage and the second voltage is greater than a preset voltage and the temperature of the battery is less than or equal to a preset temperature.

Provided is a system including: a management unit configured to manage a plurality of battery packs connected in parallel, in which the management unit is configured to control the plurality of battery packs to cause the plurality of battery packs to be discharged alternately so that a discharge rate of each of the plurality of battery packs becomes higher than the discharge rate in a case of discharging all of the plurality of battery packs. The plurality of battery packs include a plurality of left-hand side battery packs and a plurality of right-hand side battery packs, and the management unit is configured to manage the plurality of battery packs to cause at least one of the plurality of battery packs in each of the plurality of left-hand side battery packs and the plurality of right-hand side battery packs to be discharged at a time in order.

A device includes a battery, a voltage sensor, and a controller. The battery includes a first discharge rate between a first voltage and a second voltage and a second discharge rate between the second voltage and a third voltage. The second voltage is less than the first voltage and the third voltage is less than the second voltage. The voltage sensor is to sense a voltage of the battery. The controller is to convert the sensed voltage of the battery to a percentage value indicating a remaining charge of the battery as a linear function based on time to discharge the battery from the first voltage to the third voltage.

An aerosol-generating device is disclosed. The aerosol-generating device includes a first container accommodating an aerosol-generating substance, a heater heating the aerosol-generating substance, a second container configured to be rotatable and including chambers, a rotation detection sensor sensing rotation of the second container, and a controller. The controller determines any one of the chambers to be an application chamber through which an aerosol passes based on a signal received from the rotation detection sensor, and determines usage of a chamber determined to be the application chamber. The heater is heated to a first temperature or higher when the usage is equal to or greater than a first reference and less than a second reference, and is heated to a second temperature or higher when the usage is equal to or greater than the second reference and less than a third reference. The second temperature is higher than the first temperature.

A network device generates first resonant light used to carry information; and the network device sends the first resonant light to a terminal by using a resonant cavity component, where the resonant cavity component of the network device and a resonant cavity component of the terminal form an open resonant cavity. In wireless optical communication, an information transmission rate can be greatly improved by using a resonant light multiplexing technology. This application further discloses a network device and a terminal that can implement the foregoing wireless optical communication method.

A charger, comprising: a charger body, an upper part of one side of which is provided with a placement slot, which is hinged to a charging port and a plug-in rod, the upper part of the body is provided with a power indicator light, the bottom end is provided with a socket for adapting the charging cable, and the other side is provided with a lithium battery placement slot, in which a lithium battery placement case is inserted. Corrugated side support sheets are fixedly connected to both sides in the case, the top end of which is connected to a first conductive sheet, the inner bottom end of which is fixedly connected to a second conductive sheet hinged to the third conductive sheet and a spring is fixedly connected therebetween. The charger has a simple structure, the plug-in rod is hinged. It has a built-in battery as a power bank.

A charging method, including: obtaining the number of charge-discharge cycles of a battery and an application scenario during charging; determining a target charging mode among at least two charging modes according to the number of charge-discharge cycles and the application scenario, in which different charging modes have different charging rates, and the charging modes with different charging rates have different charging damages to the battery; and charging the battery in the target charging mode.

A method of calculating a relative state-of-charge (RSOC) of a battery according to the disclosure includes measuring at least one parameter of the battery, based on the at least one parameter, estimating a state-of-charge (SOC) of the battery, based on the SOC, SOC-open circuit voltage (SOC-OCV) data of the battery, and the at least one parameter, estimating a non-dischargeable capacity of the battery, based on the non-dischargeable capacity of the battery, the SOC, and intrinsic capacity of the battery, estimating an available SOC (AvSOC) of the battery, based on the SOC and the AvSOC of the battery, determining the RSOC of the battery, and based on a ratio of the RSOC to the AvSOC, updating the RSOC of the battery.