Disclosed is a secondary battery diagnosing technology capable of effectively diagnosing a state of a secondary battery using a charge and discharge signal of the secondary battery. The secondary battery diagnosing apparatus includes a memory unit configur...

A battery diagnosing apparatus according to an embodiment of the present disclosure includes a measuring unit configured to measure an OCV of a battery after charging of the battery is finished and measure a resistance of the battery while the battery is d...

A battery pack includes first and second pack terminals, a battery between first and second battery terminals, a main switch between the first pack terminal and the first battery terminal, a first resistor and a first insulated switch in series between the...

A battery management apparatus according to an embodiment disclosed herein includes a power source unit including a plurality of power sources, a measurement unit configured to measure a first voltage by applying a first power source among the plurality of...

A method for predicting a constant current discharge graph for a battery cell according to one feature of the invention includes: measuring a first time required for the battery cell voltage to decrease to a first discharge limit voltage by a first constan...

A method for determining a state of charge of a battery system (10) may include calculating a voltage difference between a first voltage detected at a first time point and a second voltage detected at a second time point, for each of a plurality of cells i...

A method (3000) and apparatus (5000) for compensating sampling voltages of battery cells, and an electric apparatus (6000). The method (3000) comprises: after it is confirmed that all battery cells (C11-C48) connected to voltage collection apparatuses (200...

Disclosed is a method of detecting the disconnection state of a power cable in an inverter system. The method includes detecting a disconnection state of a first power cable by using a difference value between a battery voltage and a DC-link voltage, detec...