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US 12,695,127 B2Granted
System and method for estimating battery cell surface temperature
AssigneeLG Energy Solution, Ltd.
InventorsHo Chol Nam, Seog Jin Yoon
Life of this patent
Estimating the term…
Abstract
The present invention relates to a battery cell surface temperature estimation system and method capable of minimizing a temperature measurement delay through a software algorithm method that estimates the actual cell surface temperature by reflecting the gradient of the measured temperature change of the battery cell.
Claims11
A battery cell surface temperature estimation control system comprising:
- a temperature measurer configured to measure a surface temperature of a battery cell being charged/discharged at a predetermined cycle interval;
- a delay time acquirer configured to acquire a delay time needed for the surface temperature to reach a maximum temperature for each predetermined temperature section from a charge/discharge end time point of the battery cell;
- a first memory configured to store the delay time acquired by the delay time acquirer corresponding to each charge/discharge state of the battery cell for each predetermined temperature section as a database based on data including the delay time obtained from the delay time acquirer;
- a second memory configured to store the surface temperature measured by the temperature measurer;
- and
- a cell surface temperature predictor configured to calculate a delay time corresponding to the surface temperature measured by the temperature measurer based on the database of the first memory, and predict an actual cell surface temperature of the battery cell, based on a change in a measurement cell surface temperature over the calculated delay time by the cell surface temperature predictor,
- wherein a charging or discharging of the battery cell is controlled based on the predicted actual cell surface temperature.
4 more elements
A battery cell surface temperature estimation and control method comprising:
- a temperature measurement step of measuring a surface temperature that is a surface temperature of a battery cell being charged/discharged at a predetermined cycle interval;
- a delay time acquisition step of acquiring a delay time, by a delay time acquirer, needed for the surface temperature measured in the temperature measurement step to reach a maximum temperature for each predetermined temperature section from a charge/discharge end time point of the battery cell;
- a database provision step of storing the delay time acquired by the delay time acquirer corresponding to each charge/discharge state of the battery cell for each predetermined temperature section into a database based on data on the delay time acquired by the delay time acquirer for each predetermined temperature section obtained through the temperature measurement step and the delay time acquisition step;
- a cell surface temperature prediction step of calculating a delay time, by a cell surface temperature predictor, corresponding to the measured cell surface temperature of the battery cell based on the database obtained in the database provision step and predicting an actual cell surface temperature that is an actual temperature value of the battery cell, based on a change in a measurement cell surface temperature over the calculated delay time by the cell surface temperature predictor;
- and
- controlling a charging or discharging of the battery cell based on the predicted actual cell surface temperature.
3 more elements
Dependencies are inferred from the claim text.