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US 12,749,722 B2Granted
Battery protection methods and systems
AssigneeLG Energy Solution, Ltd.
InventorJae Hyung Kim
Life of this patent
Estimating the term…
Abstract
The present invention relates to a battery protection method and system, and relates to a method of classifying protection operations based on the possibility of occurrence of safety issues such as ignition/heating, and additionally implementing protection algorithms corresponding to each while maintaining the existing protection operation/release condition, and relates to a method and system for protecting a battery in a way to prevent safety issues in advance by permanently blocking battery operation if the over voltage of the battery bank continues to occur even after the first action before reaching the cell unbalance protection operation condition, check whether an over voltage occurs in a specific battery bank, and take the primary measures to prevent overcharge of the battery bank.
Claims24
A battery protection method comprising:
- a state data measurement step of measuring state data of a battery at regular intervals;
- a protection operation generation step of determining whether the state of the battery satisfies a preset protection operation generation condition for each protection operation item of the battery using the state data of the battery measured in the state data measurement step, and generating a battery protection operation for items determined to be satisfied;
- a protection operation release step of determining whether the protection operation release condition of a preset occurrence item is satisfied by using the state data of the battery measured after the battery protection operation of at least one item has occurred by the protection operation generation step, and releasing the generated battery protection operation when it is satisfied so that the battery operates in a normal operation mode;
- and
- an abnormality measures step of dividing a category to which the item of the protection operation that occurred in the protection operation generation step belongs, and taking a predetermined abnormality measure corresponding to the corresponding category when the occurrence state of the battery protection operation meets the abnormality measures satisfaction condition corresponding to the divided category.
2 more elements
A battery protection method comprising:
- a state data measurement step of measuring state data of a battery including at least two battery banks at regular intervals;
- a battery protection operation generation step of comparing whether the voltage of each battery bank being charged meets a preset over voltage protection operation generation condition based on the state data of the battery measured in the state data measurement step to generate an over voltage protection operation for one or more of the battery banks that meet the requirements;
- a bank voltage difference calculation step of calculating a voltage difference between the one or more battery banks having over voltage protection operation and one of the battery banks having a lowest voltage in the battery protection operation generation step;
- a notification alarm generation step of comparing whether the voltage difference calculated in the bank voltage difference calculation step is included in a predetermined reference voltage difference range and generating a state confirmation notification alarm for the one or more battery banks having over voltage protection operation when included;
- and
- a buffer voltage down adjustment step of checking whether the over voltage protection operation continues to occur over a first reference number in the one or more battery banks having over voltage protection operation after the state confirmation notification alarm of the notification alarm generation step occurs, and downwardly adjusting the buffer voltage value currently set for the one or more battery banks having over voltage protection operation by a predetermined reference voltage value or a predetermined ratio (%) of the buffer voltage value currently set in the case of occurrence.
3 more elements
A battery protection system comprising:
- a state data measurement unit configured to measure state data of a battery at regular intervals;
- a battery protection operation generating unit configured to determine whether the battery state meets a preset protection operation generation condition for each protection operation item using the state data of the battery measured by the state data measurement unit and generate battery protection operation of items determined to be satisfied;
- a battery protection operation release unit configured to determine whether the protection operation release condition of a preset item is satisfied using the measured state data of the battery after the protection operation of at least one item is generated by the battery protection operation generating unit, and release the battery protection operation of the generated item when it is satisfied;
- an abnormality measures satisfaction condition comparison determination unit configured to divide a category to which the item of battery protection operation generated in the battery protection operation generating unit belongs, and compare and determine whether the occurrence state of the protection operation satisfies an abnormality measures satisfaction condition corresponding to the divided category;
- and
- an abnormality measures unit configured to take predetermined abnormality measures corresponding to the divided categories when it is determined that the occurrence state of the battery protection operation meets the abnormality measures satisfaction condition corresponding to the divided category according to a result of the determination of the abnormality measures satisfaction condition comparison determination unit.
3 more elements
A battery protection system comprising:
- a state data measurement unit configured to measure state data of a battery including at least two battery banks at regular intervals;
- a battery protection operation generating unit configured to compare whether the voltage of each battery bank meets a preset over voltage protection operation generation condition based on the state data of the battery measured by the state data measurement unit, and generate an over voltage protection operation in at least one of the battery banks that meets the preset over voltage protection operation generation condition;
- an abnormality measures satisfaction condition comparison determination unit configured to compare whether the voltage difference between the over voltage protection operation generating battery bank in which the over voltage protection operation is generated by the battery protection operation generating unit and the battery bank having a lowest voltage compared to the over voltage protection operation generating battery bank is included in a predetermined reference voltage difference range, and determine whether the over voltage protection operation occurrence battery bank satisfies an abnormality measures satisfaction condition when included;
- and
- an abnormality measures unit configured to take predetermined abnormality measures corresponding thereto when it is determined that the abnormality measures satisfaction condition comparison determination unit is satisfied.
2 more elements
Dependencies are inferred from the claim text.