Battery Engineering

Battery Cell-Level State-of-Health Estimator via Voltage Hysteresis and IR Drift Calculator

Battery Cell-Level State-of-Health Estimator via Voltage Hysteresis and IR Drift engineering calculator.

Quick Answer

Calculate Battery Cell-Level State-of-Health Estimator via Voltage Hysteresis and IR Drift

Calculator

State of Health
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Result Interpretation

Battery Cell-Level State-of-Health Estimator via Voltage Hysteresis and IR Drift Calculator computes State of Health in 1 using the defined engineering formula and the input values provided.

Worked Example

Verified calculation

Given:

  • Reference Ohmic Resistance at 100% SoH = 0.0182
  • Reference Voltage Hysteresis at 100% SoH = 0.062
  • Measured Ohmic Resistance = 0.0182
  • Measured Voltage Hysteresis = 0.062

Expected Result:

  • State of Health = 1

Engineering Interpretation:

Under the given input conditions, the calculated result is: State of Health = 1.

The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from automatically validated test cases.

Formula / Method

state of health = 1.0 - (0.5 * (abs(measured voltage hysteresis - reference voltage hysteresis at 100% soh) / reference voltage hysteresis at 100% soh) + 0.5 * (abs(measured ohmic resistance - reference ohmic resistance at 100% soh) / reference ohmic resistance at 100% soh))

Formula family: formula_battery_cell_level_state_of_health_estimator_voltage_hysteresis_ir_drift_method

Variables

SymbolLabelRoleDescription
V_hys_meas Measured Voltage Hysteresis INPUT Measured Voltage Hysteresis
V_hys_ref Reference Voltage Hysteresis at 100% SoH INPUT Reference Voltage Hysteresis at 100% SoH
R_ohm_meas Measured Ohmic Resistance INPUT Measured Ohmic Resistance
R_ohm_ref Reference Ohmic Resistance at 100% SoH INPUT Reference Ohmic Resistance at 100% SoH
state_of_health State of Health OUTPUT State of Health

Calculation Steps

  1. Enter the measured voltage hysteresis in V.
  2. Enter the reference voltage hysteresis at 100% soh in V.
  3. Enter the measured ohmic resistance in Ω.
  4. Enter the reference ohmic resistance at 100% soh in Ω.
  5. Step 1: Compute state of health.
  6. Read the state of health (1) from the results.

Engineering Summary

Calculate Battery Cell-Level State-of-Health Estimator via Voltage Hysteresis and IR Drift

Frequently Asked Questions

What does this calculator calculate?

The Battery Cell-Level State-of-Health Estimator via Voltage Hysteresis and IR Drift Calculator estimates State of Health based on the input parameters you provide

Why is measured voltage hysteresis important in this calculation?

measured voltage hysteresis is directly proportional to state of health. When you enter measured voltage hysteresis in V, the calculator uses it in the engineering formula to compute the output

How should I interpret the result state of health?

The calculator outputs state of health. The result is computed directly from the input values using the defined engineering formula

What units should I use for the inputs?

Enter each value in the units shown next to the input field: Measured Voltage Hysteresis (V), Reference Voltage Hysteresis at 100% SoH (V), Measured Ohmic Resistance (Ω), Reference Ohmic Resistance at 100% SoH (Ω). Make sure all inputs use the specified units for consistent results

What assumptions does this calculator use?

This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment

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