Systems and methods are disclosed herein for determining the remaining useful life of a battery cell that includes the battery cell's internal resistance and/or shock loading. In one example implementation, the systems and methods disclosed herein monitor acceleration information over time based on information received from an accelerometer integrated in a battery cell and electrical information for at least one electrical parameter of the battery cell over time. The information is stored for determining remaining useful life. In another example implementation, the systems and methods disclosed herein determine a voltage drop across the battery cell and a current output of the battery cell. The systems and methods determine an internal cell resistance of the battery cell based on charge or discharge voltage and current information.

A vaporizer may include a vaporizer body configured to couple with a vaporizer cartridge including a vaporizable material. The vaporizer body may include a first power source configured to discharge a current to a heating element in order to cause a vaporization of at least a portion of the vaporizable material included in the vaporizer cartridge by at least increasing a temperature of the heating element. The vaporizer configured to engage in a reverse charging with a device in which the first power source of the vaporizer charges or is charged by a second power source at the device. Various embodiments of the vaporizer cartridge are provided.

An AC battery system is provided herein and comprises a plurality of microinverters, a first battery pack comprising a first plurality of battery cells and a second battery pack comprising a second plurality of battery cells. Each of the first plurality of battery cells and the second plurality of battery cells are connected to the plurality of microinverters via a first bus and a second bus comprising a respective first semiconductor switch and a second semiconductor switch, and a controller operatively connected to the plurality of microinverters and the first plurality of battery cells and the second plurality of battery cells and configured to control the plurality of microinverters to at least one of open or close the first semiconductor switch and the second semiconductor switch based on a voltage and an impedance of a first cell of the first plurality of battery cells and a first cell of the second plurality of battery cells.

Provided are a method for battery derating protection, an electronic device, and a storage medium. In the method, application stages of a to-be-tested battery are correspondingly adjusted based on decline of a state of health of the to-be-tested battery; when the to-be-tested battery is in a beginning of life stage or a middle of life stage, a state-of-charge usage interval of the to-be-tested battery is set to an initial usage interval; when the to-be-tested battery transitions from the middle of life stage to an end of life stage, the state-of-charge usage interval is narrowed to a limited usage interval; when the to-be-tested battery transitions from the safety of life stage to the hazard of life stage, the to-be-tested battery is forcibly discharged to the lower limit of the limited usage interval; after completing forced discharge, the state-of-charge usage interval of the to-be-tested battery is set to a single value.

According to some embodiments, a battery management system for a metal-hydrogen battery system is presented. In particular, a method of managing a battery system includes applying a charging current through a battery string of the battery system, the battery string including a plurality of coupled batteries; monitoring temperature of the plurality of batteries; determining a maximum charging voltage from a Vtable that relate the charging current, the temperature, and the maximum charging voltage for each battery in the battery string; and stopping the charging current when a voltage across one or more of the batteries of the battery string reaches the maximum charging voltage.

An electronic device and a method for monitoring a health state of a battery assembly are provided. During an operation process and a charging process of a lithium battery, key parameters (such as voltage, temperature, current, and internal resistance) can be monitored in real time, and a health state of the lithium battery can be evaluated through data analysis. Embodiments of the present disclosure can not only help timely discover potential issues (such as leakage and bulge), but also provide valuable information for a battery management system and a lithium battery manufacturer, thereby optimizing a battery usage strategy and extending the service life of the battery.

Power systems and methods of using the same to deliver power. A power system referenced herein can include a housing capable of attaching to a workstation, one or more cradles or mounting fixtures to receive at least one energy storage device, electronic circuitry to communicate status of the at least one energy storage device, state of charge of the at least one energy storage device, and/or overall health of the at least one energy storage device, and one or more electrical connectors to allow the at least one energy storage device to charge and/or discharge and communicate with the electronic circuitry, with said housing having an internal power supply and charge circuitry, said power supply capable of receiving input power from an external AC or DC power source; wherein the power system is configured to deliver power to the workstation.

Various embodiments of the teachings herein include a method for ascertaining at least one average capacity loss of a battery storage device. The method may include: measuring at least two load cycles of the battery storage device using a high precision coulometry apparatus; determining a first charge displacement and a second charge displacement; determining a capacity loss equal to the difference between the first charge displacement and the second charge displacement; repeatedly measuring load cycles until the capacity loss is almost constant in at least two consecutive load cycles; and ascertaining an average capacity loss based on at least two capacity losses.

In a management device that manages a parallel system for power storage where a plurality of series-connected cell groups are connected in parallel, controller (16) derives deviations of currents flowing through the plurality of series-connected cell groups, and calculates an upper limit value of a charging current or charging power of the whole parallel system or an upper limit value of a discharging current or discharging power of the whole parallel system based on the derived current deviations. Controller (16) adjusts the upper limit value by multiplying the upper limit value by a coefficient (01) in accordance with a condition at a time of deriving the current deviations.

The invention discloses method and apparatus for quantitative analysis of battery performance and an electronic device. The method includes performing a full charging/discharging process on a to-be-analyzed battery cluster, and determining differential capacities versus voltage of a plurality of cells in the battery cluster at different times; determining first times and first states of charge (SOC) when the differential capacities versus voltage of the cells reach a first peak and second times and second SOCs when the differential capacities versus voltage of the cells reach a second peak, and determining capacity parameters of the cells; and performing quantitative analysis on the battery cluster according to the capacity parameters of the plurality of cells. Accordingly, the battery cluster does not need to be disassembled. The capacity parameters can be quickly and accurately determined through a full charging/discharging process. The method requires can realize relatively accurate quantitative analysis for the battery cluster.