The present invention relates to a method for manufacturing a degenerate cell and a method for evaluating a degenerate cell including the same. The method for manufacturing a degenerate cell includes: preparing a battery cell which has a structure where an electrode assembly, which is generated by lamination of a negative electrode, a positive electrode, and a separator, is accommodated in a battery case, and an electrode lead is drawn out to an outside of the battery case; and precipitating lithium metal on a predetermined region between the negative electrode and the separator by performing charge and discharge under predetermined temperature, pressure and charge and discharge pattern conditions.

The present invention relates to a method for manufacturing a degenerate cell and a method for evaluating a degenerate cell including the same. The method for manufacturing a degenerate cell includes: preparing a battery cell which has a structure where an electrode assembly, which is generated by lamination of a negative electrode, a positive electrode, and a separator, is accommodated in a battery case, and an electrode lead is drawn out to an outside of the battery case; and precipitating lithium metal on a predetermined region between the negative electrode and the separator by performing charge and discharge under predetermined temperature, pressure and charge and discharge pattern conditions.

Disclosed is a battery state prediction device including a data measurement unit that measures information about a battery and to output first data and a battery state estimation unit that calculates a state of charge (SOC) value of the battery based on the first data, generates second data by pre-processing the first data based on the SOC value, and estimates a state of health (SOH) of the battery based on the second data. The battery state estimation unit calculates the SOC value based on an extended Kalman filter and adjusts a parameter of the extended Kalman filter based on the estimated SOH.

Disclosed is a battery state prediction device including a data measurement unit that measures information about a battery and to output first data and a battery state estimation unit that calculates a state of charge (SOC) value of the battery based on the first data, generates second data by pre-processing the first data based on the SOC value, and estimates a state of health (SOH) of the battery based on the second data. The battery state estimation unit calculates the SOC value based on an extended Kalman filter and adjusts a parameter of the extended Kalman filter based on the estimated SOH.

Electrical systems of elevators and methods thereof, with an elevator alarm system configured to provide an alarm within an elevator car of the elevator system, wherein the elevator alarm system is configured to be supplied with power from a primary power source. A secondary power source includes a first storage device and a second storage device and a controller is configured to control a power flow from the secondary power source to the elevator alarm system when the primary power source fails and test a capacity of the first storage device by discharging a power of the first storage device and storing said discharged power within the second storage device.

Electrical systems of elevators and methods thereof, with an elevator alarm system configured to provide an alarm within an elevator car of the elevator system, wherein the elevator alarm system is configured to be supplied with power from a primary power source. A secondary power source includes a first storage device and a second storage device and a controller is configured to control a power flow from the secondary power source to the elevator alarm system when the primary power source fails and test a capacity of the first storage device by discharging a power of the first storage device and storing said discharged power within the second storage device.

A characteristic, such as State Of Health (SOH) or State Of Charge (SOC), is estimated for an Energy Storage System (ESS) by supplying a pre-determined signal to the ESS, measuring a response signal output by the ESS, and obtaining an impedance spectrum of the ESS. In one example, the ESS is one of several electrochemical battery packs of an electric vehicle. The pre-determined signal is a current signal generated by a switching power converter that transfers charge from the battery pack to other battery packs or transfers charge from the other battery packs onto the battery pack. The pre-determined signal is generated without disrupting any load supplied by the battery packs. The battery pack outputs a voltage signal in response to receiving the pre-determined current signal. A processor obtains an impedance spectrum using the current and voltage signals, and thereby obtains an SOH and SOC estimate of the battery.

Provided is a power supply device which includes a plurality of battery modules each having a secondary battery and in which the battery modules are connected in series with one another according to a gate driving signal from a controller. An SOC control target value that is a target value for states-of-charge of the battery modules is changed according to the number of the battery modules that are available to be connected in series.

Provided is a power supply device which includes a plurality of battery modules each having a secondary battery and in which the battery modules are connected in series with one another according to a gate driving signal from a controller. An SOC control target value that is a target value for states-of-charge of the battery modules is changed according to the number of the battery modules that are available to be connected in series.

A battery pack maintenance system includes maintenance circuitry, image input circuitry, a display, and user input circuitry. The maintenance circuitry is configured to perform a maintenance operation on a battery pack having a plurality of batteries. The image input circuitry is configured to receive an image of the battery pack. The display is configured to display the image. The user input circuitry is configured to receive a battery selection user input identifying a selected battery of the battery pack. The maintenance circuitry is configured to associate the battery selection user input with a maintenance operation performed on the selected battery.