Battery management system with state of power prediction for an accumulator
A battery management system with state of power prediction for an accumulator based on a calculated current of the accumulator, a method and a control device are provided. The battery management system for an accumulator is configured and arranged to predict a state of power of the accumulator, the prediction being based on a calculated current of the accumulator.
1. A battery management system for an accumulator, wherein the battery management system is configured and arranged to:
calculate a diffusion factor;
calculate a current based on an inverted single-particle model; and
predict a state of power of the accumulator, wherein the prediction is based on the calculated current.
2. The battery management system according to claim 1 , wherein the battery management system is configured and arranged to iteratively solve the inverted single-particle model to calculate the current.
3. The battery management system according to claim 1 , wherein the battery management system is configured and arranged to use a voltage and a pulse length as inputs for the inverted single-particle model.
4. The battery management system according to claim 2 , wherein the battery management system is configured and arranged to perform the following steps in iteratively solving the inverted single-particle model:
calculating the current based on the inverted single-particle model;
verifying the calculated current; and
updating parameters of the inverted single-particle model and repeating the steps of calculating and verifying, if the step of verifying indicates that recalculating the current is required.
5. The battery management system according to claim 1 , wherein the accumulator is implemented as a lithium-ion accumulator.
6. The battery management system according to claim 1 , wherein the battery management system is configured and arranged to control the accumulator based on the predicted state of power.
7. A method for predicting a state of power of an accumulator, comprising the steps of:
calculating a diffusion factor;
calculating a current based on an inverted single-particle model;
verifying the calculated current;
updating parameters of the inverted single-particle model and repeating the steps of calculating and verifying, if the step of verifying indicates that recalculating the current is required.
8. A controller for controlling a power flow of an accumulator, the controller being configured and arranged to control the power flow based on a predicted state of power, wherein the controller is configured and arranged to determine the predicted state of power according to a method according to claim 7 .