US 11,959,969 B2 · Apparatus and method for diagnosing battery

Abstract

There is provided an apparatus for diagnosing whether or not an error has occurred in battery cells, the apparatus including a voltage measurement circuit for measuring a voltage of a battery cell, a data processing circuit for calculating a target statistical value indicating a state of the battery cell based on a voltage measured by the voltage measurement circuit, and calculates a cumulative statistical value, and a diagnosis circuit that determines whether or not an error has occurred in the battery cell through a cumulative determination operation of comparing the cumulative statistical value with a cumulative reference value, and counts a number of times of cumulative error when it is determined that the error has occurred in the battery cell in the cumulative determination operation.

Claims20

Dependent claims

An apparatus for diagnosing a battery, the apparatus comprising:

a voltage measurement circuit configured to measure a voltage of a battery cell of the battery;
a data processing circuit configured to:
calculate a target statistical value indicating a state of the battery cell based on a voltage measured by the voltage measurement circuit, and
calculate a cumulative statistical value by accumulating target statistical values of the battery cell during an analysis period;
and
a diagnosis circuit configured to determine whether or not an error has occurred in the battery cell through a cumulative determination operation of comparing the cumulative statistical value with a cumulative reference value, and count a number of times of cumulative error when it is determined that the error has occurred in the battery cell in the cumulative determination operation,
wherein the apparatus is configured to control the battery based on the cumulative determination operation performed by the diagnosis circuit.

4 more elements

A method for diagnosing a battery, comprising:

a voltage measurement step of measuring, by an apparatus for diagnosing, a voltage between an input terminal and an output terminal of a battery cell of the battery;
a calculation step of calculating, by the apparatus for diagnosing a battery, a target statistical value indicating a state of the battery cell based on the voltage measured in the voltage measurement step, and calculating a cumulative statistical value by accumulating target statistical values of the battery cell during an analysis period;
a first diagnosis step of determining, by the apparatus for diagnosing, whether or not an error has occurred in the battery cell through a cumulative determination operation of comparing the cumulative statistical value with a cumulative reference value and counting a number of times of cumulative error when it is determined that the error has occurred in the battery cell through the cumulative determination operation;
and
controlling the battery based on the diagnosis from the first diagnosis step.

2 more elements

Dependencies are inferred from the claim text.

Apparatus and method for diagnosing battery

Life of this patent

Apparatus and method for diagnosing battery

Life of this patent

Abstract

Claims20