What is the definition and function of temperature break point in Equivalent Circuit Battery Block(Simulink)?

Why must there be more than two temperature breakpoints?

Answer 1

[Javier Gazzarri]

Hello Leon,

Thank you for your question.

The breakpoints indicate the temperature values for which you need to have OCV and internal resistance dependency. The error message is a result of a matrix dimension consistency check that compares the OCV and internal resistance matrix sizes against the T and SOC vectors. If you don't have this information, you can arbitrarily choose a second T value and replicate the OCV and resistance columns, but please keep in mind that your battery behavior will not depend on temperature, which for Li ion is typically a very important effect.

Please let me know if the above was clear enough.

Best regards,

Javier

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[Leon Bu]

Thank you very much!