Provided is a method, apparatus, and computer program for diagnosing an internal short circuit of a battery pack. The method may be for diagnosing an internal short circuit of a battery pack based on a state of charge (SOC) variation amount and a balancing amount of each cell of the battery pack, and the method may include checking an SOC variation amount of the battery pack when the battery pack is in a first state, checking a balancing amount of the battery pack when the battery pack is in a second state, and determining whether the battery pack has an internal short circuit based on the checked SOC variation amount and the checked balancing amount.

Provided is a method, apparatus, and computer program for diagnosing an internal short circuit of a battery pack. The method may be for diagnosing an internal short circuit of a battery pack based on a state of charge (SOC) variation amount and a balancing amount of each cell of the battery pack, and the method may include checking an SOC variation amount of the battery pack when the battery pack is in a first state, checking a balancing amount of the battery pack when the battery pack is in a second state, and determining whether the battery pack has an internal short circuit based on the checked SOC variation amount and the checked balancing amount.

Measuring circuits including switched capacitors, and related systems, methods, and devices are disclosed. A measurement circuit includes a flying capacitor, a grounded capacitor, a first switch, a second switch, a third switch, and a fourth switch. The first switch is configured to selectively electrically connect an electrochemical cell cathode node to a first terminal of the flying capacitor. The second switch is configured to selectively electrically connect an electrochemical cell anode node to a second terminal of the flying capacitor. The third switch is configured to selectively electrically connect the first terminal of the flying capacitor to a third terminal of the grounded capacitor. The fourth switch is configured to electrically connect the second terminal of the flying capacitor to a fourth terminal of the grounded capacitor. The fourth terminal is electrically connected to the reference voltage potential node.

Discussed is an application that efficiently utilizes a vehicle battery by predicting performance of the vehicle battery and an available driving distance based on environmental condition of an area where a vehicle is parked and state information of the vehicle battery.

A state value for a rechargeable battery, for example a lithium-ion battery, is determined on the basis of several aging characteristic variables. The aging characteristic variables comprise at least one current aging value and one future aging value.

A state value for a rechargeable battery, for example a lithium-ion battery, is determined on the basis of several aging characteristic variables. The aging characteristic variables comprise at least one current aging value and one future aging value.

An apparatus for diagnosing a degree of degradation of a battery includes a measuring unit configured to measure a voltage of each of a plurality of battery cells in each of a plurality of cycles where charging and discharging is performed and output voltage information about the plurality of measured voltages, and a control unit configured to receive the plurality of voltage information, calculate a voltage deviation of each cycle for each battery cell based on a reference voltage of each of the plurality of battery cells, select a cycle section satisfying a predetermined condition for each of the plurality of battery cells based on the calculated voltage deviation, calculate a voltage deviation change rate corresponding to each of the plurality of selected cycle sections, and diagnose a relative degree of degradation of the plurality of battery cells based on the plurality of calculated voltage deviation change rates.

A deterioration determination device for a storage battery system includes: a current sensor configured to, at a time of stopping charging or stopping discharging of storage batteries, measure circulation current generated among storage battery arrays in each of storage battery array blocks; a measurement control unit configured to collect a value of the circulation current measured by the current sensor; and a storage battery state determining unit configured to, from the collected value of the circulation current, determine whether or not there is deterioration of the storage batteries in the storage battery array blocks.

An electric quantity measuring apparatus, including a battery unit, a sampling unit, and a charging management integrated circuit. The sampling circuit is connected to the battery unit and configured to obtain a current signal of the battery unit. The charging management integrated circuit is arranged with a voltage detection pin and a current detection pin. The voltage detection pin is connected to the battery unit, and the current detection pin is connected to the sampling circuit. The charging management integrated circuit is configured to detect a voltage signal of the battery unit based on the voltage detection pin, detect the current signal of the battery unit based on the current sampling pin, and obtain voltage information, current information, and electric quantity information of the battery unit.

An electric quantity measuring apparatus, including a battery unit, a sampling unit, and a charging management integrated circuit. The sampling circuit is connected to the battery unit and configured to obtain a current signal of the battery unit. The charging management integrated circuit is arranged with a voltage detection pin and a current detection pin. The voltage detection pin is connected to the battery unit, and the current detection pin is connected to the sampling circuit. The charging management integrated circuit is configured to detect a voltage signal of the battery unit based on the voltage detection pin, detect the current signal of the battery unit based on the current sampling pin, and obtain voltage information, current information, and electric quantity information of the battery unit.