Battery analysis system and method

1. A method comprising:

for each battery of a plurality of batteries:

applying a load profile to the respective battery; and

characterizing a response of the respective battery to the applied load;

generating a set of models based on the responses, wherein each model comprises at least one of:

a thermal model;

an electrochemical model; or

a heat generation model;

validating a model of the set of models;

measuring battery properties of a second battery using a sensor; and

using a state estimator to determine a state of the second battery based on the battery properties and the validated model.

2. The method of claim 1 , wherein validating the model comprises validating the model by comparing historic battery data to simulated battery data generated using the model.

3. The method of claim 2 , wherein the model of the set of models is validated when the historic battery data and the simulated battery data match to within a threshold.

4. The method of claim 1 , further comprising, validating the state estimator.

5. The method of claim 4 , wherein validating the state estimator comprises comparing a measured battery state to an estimated state determined using the state estimator.

6. The method of claim 5 , wherein the state estimator is validated when the measured battery state and the estimated battery state match to within a threshold.

7. The method of claim 1 , wherein the applied load comprises a chirped electrical load, wherein the response is measured during and after the chirped electrical load is applied.

8. The method of claim 1 , wherein the second battery is integrated into one of: an electric passenger vehicle, an electric bicycle, an electric power tool, an electric airplane, construction equipment, or a satellite.