System and method for distributing electric power from a power distribution unit (10) to an electric load (150) are disclosed. The method includes receiving, by a monitoring circuit (100), electric power from a power source (510), the monitoring circuit be...

Disclosed herein is a detector that detects precision in charging current of a battery cell charging and discharging device, the detector including an instrument unit and a power supply unit, wherein the instrument unit includes a housing formed in a box s...

A power controller controls power to a load (14a, 14b, 14n) and include a primary current sensor (22a, 22b, 22n), a controller (28a, 28b, 28n) and a current source (20a, 20b, 20n). The primary current sensor includes a primary conductor and an auxiliary co...

[Abstract] A battery pack (21A) according to embodiments of the present invention comprises a plurality of battery modules (11A-11D) connected to each other in either one or both of a series connection mode and a parallel connection mode. An identifying in...

The invention relates to a method and apparatus for calculating the input current being drawn by a power converter. The power converter may be connected to and charging a battery and the method includes the steps of measuring the current and voltage being ...

A direct current (DC) power supply apparatus includes an input unit configured to receive an outside DC power; a plurality of polarity correction units configured to correct the polarity of the outside DC power; a plurality of switch units installed to cor...

A state-of-charge estimation apparatus 10 that is connected to a power storage device 11 constituted by connecting a plurality of cell batteries 4-1 to 7-k, and estimates a state of charge of the power storage device 11, the state-of-charge estimation appa...