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Built-in circuit elementliion_cell

Li-ion cell (protected)

OCV(SoC) + internal resistance, charge counter with time lapse, protection circuit (DW01A thresholds 4.30/2.40 V)

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Schematic symbol

Key data

Category
Sources
Simulation model
Built-in circuit element
Reference prefix
BT
Pins
2
Land pattern
JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical

Simulation model

Dedicated model built into the simulator for this part (see the description).

Primitive
MODEL
Model and limitations

Generic protected Li-ion cell

Included effects

  • State of charge by coulomb counting; optional accelerated battery time.
  • Open-circuit voltage curve, internal resistance and directional over/undervoltage protection.

Model limitations

  • The voltage curve and resistance are assumptions, not measurements of your cell.
  • No temperature, ageing, polarisation dynamics, overcurrent protection or protection delays.

Offline reference checks

  • Analytical constant-current charge balance and voltage drop.
  • Regression cases for overcharge and over-discharge blocking.

Reference cases use a 60 mAh cell and fixed model parameters. Battery pulse capability and real-cell lifetime are not qualified.

Documented test coverage, not a live test result or manufacturer approval. Simulation results depend on the selected parameters and circuit.

Pins 2

PinNameUse
++Passive pinPositive terminal (+)
-−Passive pinNegative terminal (−)

Parameters 4

Capacitancecapacity
Default60m Ah
State of charge (start)SoC
Default50 %

Follows the cell during a run. The value at the end is the start of the next run. Type a value to change it.

Internal resistanceR_int
Default0.5 Ω
Time lapseaccel
Default1

Charge throughput × factor, e.g. 1000: 1 s of simulation = 1000 s of cell time

PCB

Connector / off-boardJST_PH_B2B-PH-K_1x02_P2.00mm_Vertical

battery connector JST PH 2-pin (pin 1 = +, check the polarity of the battery connector)