Battery diagnostic apparatus, battery diagnostic method, and battery diagnostic system
AssigneesHyundai Motor Company, Kia Corporation
InventorsYo Han BAEK, Bo Hyun LEE
Life of this patent
Estimating the term…
Abstract
A battery diagnostic apparatus and a method thereof are provided. The battery diagnostic apparatus includes a communication device that obtains current data of a battery in a first charging interval and a second charging interval different from the first charging interval and a controller that calculates a first capacity of each of a plurality of battery cells included in the battery based on the current data in the first charging interval, calculates a second capacity of each of the plurality of battery cell based on the current data in the second charging interval, and diagnoses whether abnormality occurs in the plurality of battery cells based on comparison between the first capacity and the second capacity.
Claims20
A battery diagnostic apparatus for a vehicle, the battery diagnostic apparatus comprising:
- a communication interface configured to obtain, via at least one sensor, first current data of a battery in a first charging interval and second current data of the battery in a second charging interval different from the first charging interval, wherein each of the first current data and the second current data is based on current flow measurements of a plurality of battery cells included in the battery;
- and
- a controller configured to:
- determine a first capacity of each of the plurality of battery cells based on the first current data in the first charging interval,
- determine a second capacity of each of the plurality of battery cells based on the second current data in the second charging interval, and
- generate, based on a comparison of the first capacities and the second capacities, a signal indicating at least one abnormal cell of the plurality of battery cells.
A battery diagnostic method performed by a battery diagnostic apparatus, the battery diagnostic method comprising:
- obtaining, via at least one sensor, first current data of a battery in a first charging interval and second current data of the battery in a second charging interval different from the first charging interval, wherein each of the first current data and the second current data is based on current flow measurements of a plurality of battery cells included in the battery;
- determining a first capacity of each of the plurality of battery cells based on the first current data in the first charging interval;
- determining a second capacity of each of the plurality of battery cells based on the second current data in the second charging interval;
- and
- generating, based on a comparison of the first capacities and the second capacities, a signal indicating at least one abnormal cell of the plurality of battery cells.
A battery diagnostic system for a vehicle, the battery diagnostic system comprising:
- a battery including a plurality of battery cells;
- a sensor configured to obtain first current data of the battery in a first charging interval and second current data of the battery in a second charging interval different from the first charging interval, wherein each of the first current data and the second current data is based on current flow measurements of the plurality of battery cells;
- and
- a battery diagnostic apparatus configured to:
- identify, based on the first current data, at least one first outlier cell of the plurality of battery cell;
- identify, based on the second current data, at least one second outlier cell of the plurality of battery cell;
- identify, based on a comparison between the first current data and the second current data, at least one abnormal cell, wherein each of the at least one abnormal cell is one of the at least one first outlier cell corresponding to one of the at least one second outlier cell;
- and
- generate a signal indicating the at least one abnormal cell.
Dependencies are inferred from the claim text.