Quick Answer
Calculate Automotive Lithium-Ion Battery Pack Cold-Start Power Availability Calculator
Calculator
Result Interpretation
Automotive Lithium-Ion Battery Pack Cold-Start Power Availability Calculator computes Cold-Start Power Availability in W using the defined engineering formula and the input values provided.
Worked Example
Verified calculation
Given:
- Open-Circuit Voltage = 395
- Maximum Cranking Load Power = 5500
- Cold-State Internal Resistance = 0.0125
Expected Result:
- Cold-Start Power Availability = 5502.4256279274
Engineering Interpretation:
Under the given input conditions, the calculated result is: Cold-Start Power Availability = 5502.4256279274 W.
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
cold-start power availability = (open-circuit voltage - sqrt(pow(open-circuit voltage, 2) - 4 * cold-state internal resistance * maximum cranking load power)) * open-circuit voltage / (2 * cold-state internal resistance)Formula family: formula_automotive_battery_pack_cold_start_power_availability_calculator
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| V_ocv | Open-Circuit Voltage | INPUT | Open-Circuit Voltage |
| R_internal_cold | Cold-State Internal Resistance | INPUT | Cold-State Internal Resistance |
| P_load_max | Maximum Cranking Load Power | INPUT | Maximum Cranking Load Power |
| cold_start_power_availability | Cold-Start Power Availability | OUTPUT | Cold-Start Power Availability |
Calculation Steps
- Enter the open-circuit voltage in V.
- Enter the cold-state internal resistance in ohm.
- Enter the maximum cranking load power in W.
- Step 1: Compute cold-start power availability.
- Read the cold-start power availability (W) from the results.
Engineering Summary
Calculate Automotive Lithium-Ion Battery Pack Cold-Start Power Availability Calculator
Frequently Asked Questions
What does this calculator calculate?
The Automotive Lithium-Ion Battery Pack Cold-Start Power Availability Calculator estimates Cold-Start Power Availability based on the input parameters you provide
Why is open-circuit voltage important in this calculation?
open-circuit voltage is directly proportional to cold-start power availability. When you enter open-circuit voltage in V, the calculator uses it in the engineering formula to compute the output
How should I interpret the result cold-start power availability?
The calculator outputs cold-start power availability in W. For larger power values, divide by 1000 to express the result in kW, or by 745.7 for horsepower. 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: Open-Circuit Voltage (V), Cold-State Internal Resistance (ohm), Maximum Cranking Load Power (W). 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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