Lithium-Ion Battery Parameters and State of Charge Joint Estimation Using Bias Compensation Least Squares and the Alternate Algorithm

Table 1

BCLS for parameters identification.

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Step 1: initialization: for k = 0, set , , , , and .

Step 2: time update: for .

 Observation data regression vector: via (11).

 Gain matrix: via (20).

 Covariance matrix: via (18).

 Error criterion function via (17).

 Noise variance via (15).

Step 3: measurement update:

 Update the posterior state: via (14).

 Update original system state: via (21).

Step 4: time update: return to Step 2.

Step 5: the state vector output .

 Calculate model parameters: , , and via (7).

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