Bidirectional Power Converter 24V-12V with BMS
About the Bidirectional Power Converter 24V-12V with BMS PCB
Bidirectional Power Converter 24V-12V with BMS is an open source PIC PCB design by kwiecinski, published on GitHub under the MIT license. It is a 2-layer board measuring 99.5 × 99.5 mm, with 156 components from 56 distinct parts.
Its main chip is the PIC16F886-IP, from the PIC family. Other key parts include the LM358, XL6019, XL4015, LM7805_TO220 and ICL7660. By type, the board carries 64 resistors, 35 capacitors, 27 diodes, 12 ICs, 8 transistors and 6 connectors.
It belongs with the iot & wireless, power & battery and sensors designs in this gallery.
From the project
Project contains BMS for lead-acid batteries and ESP-based board used to pull information from EASUN offgrid inverter, energy meters and sensors. It show informations od displays and use ESPhome to send it to Home Assistant..
1. Photovoltaic modules 2. Concrete base mounting 3. Metalworking and welding mounting bases and angle bar 4. Painting mounting base, angle bars and perforated profiles 5. PV mountings to perforated profiles 6. Assembly of PV installation 7. Fully assembled PV installation 8. Underground Cable Installation and Connection to the Building
B. EASUN inverter - description, installation schematic and wiring #### C. Managemenet system part: - BMS for lead-acid batteries - equalize battery, protect from large charge/discharge currents, montors battery state (temp, voltage) - ESP32 Master module -…
Main components on the Bidirectional Power Converter 24V-12V with BMS
Bidirectional Power Converter 24V-12V with BMS bill of materials (BOM)
156 components, 56 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | LM358 | SO-8_3.9x4.9mm_P1.27mm | U1, U3 |
| 1 | XL6019 | TO-263-5_TabPin3 | U2 |
| 1 | XL4015 | TO-263-5_TabPin3 | U4 |
| 1 | LM7805_TO220 | TO-220-3_Vertical | U5 |
| 1 | PIC16F886-IP | SOIC-28W_7.5x17.9mm_P1.27mm | U6 |
| 1 | ICL7660 | SOIC-8_3.9x4.9mm_P1.27mm | U7 |
| 1 | TL431LP | SOT-23_Handsoldering | U8 |
| 1 | LM317_TO-220 | TO-220-3_Vertical | U9 |
| 1 | ST485 | SOIC-8_3.9x4.9mm_P1.27mm | U10 |
| 1 | INA226 | VSSOP-10_3x3mm_P0.5mm | U11 |
| 1 | LM358 | SOIC-8_3.9x4.9mm_P1.27mm | U12 |
| 4 | BC807 | SOT-23 | Q1, Q2, Q4, Q8 |
| 4 | BC817 | SOT-23 | Q3, Q5, Q6, Q7 |
| 1 | V_IN | Flat-6,3mm-connector-4P | J1 |
| 1 | V_OUT | Flat-6,3mm-connector-4P | J2 |
| 1 | ICP | PinHeader_1x06_P2.54mm_Vertical | J3 |
| 1 | RS485 | PinHeader_1x04_P2.54mm_Vertical | J4 |
| 1 | TEMP_BATT | JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical | J5 |
| 1 | TEMP_BUCK | JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical | J6 |
| 2 | Fuse | Fuseholder_Clip-5x20mm_Eaton_1A5601-01_Inline_P20.80x6.76mm_D1.70mm_Horizontal | F1, F2 |
Show 36 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LL4148 3V3 | D_MiniMELF | D1 |
| 2 | LL4148 | D_MiniMELF | D2, D6 |
| 4 | 3V3 | D_MiniMELF | D3, D7, D20, D21 |
| 16 | LED | LED_D3.0mm | D4, D8, D10, D11, D12, D13, D14, D15 +8 |
| 2 | D_Schottky_Dual | TO-220-3_Vertical-little-bigger pads | D5, D28 |
| 2 | D_TVS | D_SMA | D18, D19 |
| 2 | 47u | L_Toroid_Vertical_L28.6mm_W14.3mm_P11.43mm_Bourns_5700 | L1, L2 |
| 8 | 100n | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | C1, C2, C8, C9, C13, C30, C33, C35 |
| 5 | 1000u/35V | CP_Radial_D10.0mm_P3.50mm | C3, C6, C11, C14, C34 |
| 2 | 10n | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | C4, C12 |
| 13 | 100n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C5, C7, C10, C15, C17, C19, C20, C22 +5 |
| 1 | 1u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C16 |
| 1 | 470u/35V | CP_Radial_D8.0mm_P3.50mm | C18 |
| 2 | 22u/6,3V | CP_Radial_D5.0mm_P2.00mm | C21, C25 |
| 1 | 100u/10V | CP_Radial_D8.0mm_P3.50mm | C23 |
| 1 | 10u/10V | CP_Radial_D5.0mm_P2.00mm | C24 |
| 1 | 47u/16V | CP_Radial_D5.0mm_P2.00mm | C32 |
| 10 | 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R43, R49, R50, R55, R56, R57, R61 +2 |
| 1 | R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2 |
| 1 | 50mR | R_2512_6332Metric_Pad1.40x3.35mm_HandSolder | R3 |
| 1 | 10K 50m | R_2512_6332Metric_Pad1.40x3.35mm_HandSolder | R4 |
| 2 | 50m | R_2512_6332Metric_Pad1.40x3.35mm_HandSolder | R5, R6 |
| 2 | 100mR | R_2512_6332Metric_Pad1.40x3.35mm_HandSolder | R7, R10 |
| 2 | R | R_2512_6332Metric_Pad1.40x3.35mm_HandSolder | R8, R9 |
| 12 | 1k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R13, R15, R16, R21, R23, R24, R26, R27 +4 |
| 2 | 39k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R14, R25 |
| 2 | 100k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R17, R28 |
| 2 | 2,7k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R18, R29 |
| 2 | 0R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R19, R30 |
| 3 | 240R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R20, R31, R45 |
| 2 | 47k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R22, R32 |
| 9 | 120R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R34, R35, R36, R37, R38, R39, R40, R41 +1 |
| 1 | 1k6 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R44 |
| 2 | 510R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R46, R48 |
| 2 | 150k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R51, R52 |
| 6 | 220R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R58, R59, R60, R63, R64, R66 |
Bidirectional Power Converter 24V-12V with BMS design files
The KiCad project lives in the kwiecinski/BMS-and-offgrid-photovoltaic-management-system repository on GitHub; these links point at the commit this page was built from.
Bidirectional Power Converter 24V-12V with BMS: common questions
What microcontroller does the Bidirectional Power Converter 24V-12V with BMS use?
The Bidirectional Power Converter 24V-12V with BMS is built around the PIC16F886-IP, from the PIC family.
How big is the Bidirectional Power Converter 24V-12V with BMS PCB?
The Bidirectional Power Converter 24V-12V with BMS measures 99.5 × 99.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Bidirectional Power Converter 24V-12V with BMS?
156 components, from 56 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Bidirectional Power Converter 24V-12V with BMS design files?
From the kwiecinski/BMS-and-offgrid-photovoltaic-management-system repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Bidirectional Power Converter 24V-12V with BMS design in my own project?
Yes, under the terms of its MIT license, which kwiecinski chose for the repository.
Can I test firmware for the Bidirectional Power Converter 24V-12V with BMS without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug PIC firmware against it before you order a PCB.
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