Circuit Documentation

Summary

This document provides a detailed overview of a circuit consisting of multiple Li-ion 18650 batteries, a 2S 30A Battery Management System (BMS), step-up and step-down voltage regulators, a rocker switch, and several DC jacks. The circuit is designed to manage and regulate power from the batteries to various components, ensuring safe and efficient operation.

Component List

1. Li-ion 18650 Battery

   • Description: Rechargeable lithium-ion battery.
   • Pins: +, -
   • Purpose: Provides power to the circuit.

2. 2S 30A BMS

   • Description: Battery Management System for 2-series Li-ion batteries.
   • Pins: B+, B-, BM, P-, T, P+
   • Purpose: Manages charging and discharging of the batteries, ensuring safety and efficiency.

3. Step Up Boost Power Converter, Adjustable Voltage Regulator

   • Description: Boosts input voltage to a higher, adjustable output voltage.
   • Pins: VOUT+, VOUT-, VIN+, VIN-
   • Purpose: Increases the voltage from the battery to the required level for other components.

4. Regulator Stepdown DC XL4015 CC CV

   • Description: Step-down voltage regulator with constant current and constant voltage modes.
   • Pins: IN +, IN -, OUT +, OUT -
   • Purpose: Reduces the voltage to a lower, stable level for other components.

5. Rocker Switch (SPST)

   • Description: Single Pole Single Throw switch.
   • Pins: 1, 2
   • Purpose: Controls the power flow in the circuit.

6. DC Buchse

   • Description: DC power jack.
   • Pins: Plus, Minus
   • Purpose: Provides a connection point for external power sources or loads.

Wiring Details

Li-ion 18650 Battery

• Battery 1:
  • - connected to B- of 2S 30A BMS
• Battery 2:
  • - connected to B- of 2S 30A BMS
  • + connected to - of Battery 3
• Battery 3:
  • - connected to BM of 2S 30A BMS
  • + connected to B+ of 2S 30A BMS
• Battery 4:
  • - connected to BM of 2S 30A BMS
  • + connected to B+ of 2S 30A BMS

2S 30A BMS

• B+ connected to + of Battery 3 and Battery 4
• B- connected to - of Battery 1 and Battery 2
• BM connected to - of Battery 3 and Battery 4
• P- connected to VIN- of both Step Up Boost Power Converters and OUT - of Regulator Stepdown DC XL4015 CC CV
• P+ connected to 1 of Rocker Switch and OUT + of Regulator Stepdown DC XL4015 CC CV

Step Up Boost Power Converter, Adjustable Voltage Regulator

• Converter 1:
  • VIN+ connected to 2 of Rocker Switch
  • VIN- connected to P- of 2S 30A BMS
  • VOUT+ connected to Plus of DC Buchse 1
  • VOUT- connected to Minus of DC Buchse 1
• Converter 2:
  • VIN+ connected to 2 of Rocker Switch
  • VIN- connected to P- of 2S 30A BMS
  • VOUT+ connected to Plus of DC Buchse 3
  • VOUT- connected to Minus of DC Buchse 3

Regulator Stepdown DC XL4015 CC CV

• IN + connected to Plus of DC Buchse 2
• IN - connected to Minus of DC Buchse 2
• OUT + connected to P+ of 2S 30A BMS
• OUT - connected to P- of 2S 30A BMS

Rocker Switch (SPST)

• 1 connected to P+ of 2S 30A BMS
• 2 connected to VIN+ of both Step Up Boost Power Converters

DC Buchse

• DC Buchse 1:
  • Plus connected to VOUT+ of Step Up Boost Power Converter 1
  • Minus connected to VOUT- of Step Up Boost Power Converter 1
• DC Buchse 2:
  • Plus connected to IN + of Regulator Stepdown DC XL4015 CC CV
  • Minus connected to IN - of Regulator Stepdown DC XL4015 CC CV
• DC Buchse 3:
  • Plus connected to VOUT+ of Step Up Boost Power Converter 2
  • Minus connected to VOUT- of Step Up Boost Power Converter 2

Code

There is no microcontroller code provided for this circuit.

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This documentation provides a comprehensive overview of the circuit, including a summary, detailed component list, wiring details, and code documentation. This should serve as a useful reference for understanding and replicating the circuit.