HardLabs

BMU v2

KomplexKapharnaum·KXKM_Batterie_Parallelator·hardware/pcb-bmu-v2/BMU v2.kicad_pcb

BMU v2 PCB layout, top view — open source board by KomplexKapharnaum

About the BMU v2 PCB

BMU v2 is an open source PCB design by KomplexKapharnaum, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 194.9 × 100 mm, with 125 components from 37 distinct parts.

Other key parts include the INA237, TCA9517ADGK, ISO1540DR, TCA9535PWR and VPS8505. By type, the board carries 33 resistors, 24 diodes, 21 capacitors, 19 jumpers, 9 ICs and 5 connectors.

It belongs with the iot & wireless designs in this gallery, and the repository also holds 1 earlier revision of it.

From the project

The KXKM Batterie Parallelator is an embedded Battery Management Unit (BMU) that safely parallels multiple battery packs (24-30V) for off-grid stage installations. Each battery is individually monitored (voltage, current, temperature) and can be disconnected in microseconds via M

The KXKM Batterie Parallelator is an embedded Battery Management Unit (BMU) that safely parallels multiple battery packs (24-30V) for off-grid stage installations. Each battery is individually monitored (voltage, current, temperature) and can be disconnected in microseconds via MOSFET switches.

Built by L'Electron Rare for KompleX KapharnaüM (Villeurbanne, France) — a live arts company deploying digital scenography in public spaces without grid power.

BMU v2, from the project README
From the project README

Main components on the BMU v2

INA237TCA9517ADGKISO1540DRTCA9535PWRVPS8505MCP16331T-E/CH

BMU v2 bill of materials (BOM)

125 components, 37 distinct parts.

QtyPartRefs
4
INA237
U1, U2, U3, U7
1
TCA9517ADGK
U4
1
ISO1540DR
U5
1
TCA9535PWR
U6
1
VPS8505
U8
1
MCP16331T-E/CH
U9
2
RJ45_Shielded
J1, J2
1
Conn_01x02_Pin
J3
2
Screw_Terminal_01x01
J11, J12
8
FH-00020
H15, H16, H17, H18, H19, H20, H21, H22
4
12251103CNG0S115001
H23, H24, H25, H26
19
SolderJumper_3_Open
JP2, JP3, JP4, JP5, JP6, JP7, JP8, JP9 +11
1
VPT85BB-01A
TR1
3
1A/100V
D1, D5, D9
8
1N4148W
D2, D3, D6, D7, D10, D11, D14, D15
4
BLUE
D4, D8, D12, D16
1
1N4148WT
D13
4
RED
D20, D22, D24, D26
4
GREEN
D21, D23, D25, D27
1
22uH,1.5A
L1
Show 17 more
QtyPartRefs
1
10uF,16V
C1
4
0.1uF
C2, C4, C6, C10
7
0.1uF
C3, C5, C7, C8, C9, C11, C21
2
10uF/50V
C12, C13
1
0.1uF
C14
1
0,1uF
C15
1
1uF
C16
1
20pF
C17
3
10uF
C18, C19, C20
4
HOVB4026-5W-2MR-1%
R1, R8, R46, R47
8
470R
R2, R5, R9, R12, R16, R19, R23, R39
2
50R
R15, R22
7
10K
R17, R18, R28, R37, R38, R42, R43
1
52.3k/1%
R24
1
10k/1%
R25
2
1K
R26, R27
8
330R
R29, R30, R31, R32, R33, R34, R35, R36

BMU v2 design files

The KiCad project lives in the KomplexKapharnaum/KXKM_Batterie_Parallelator repository on GitHub; these links point at the commit this page was built from.

BMU v2: common questions

How big is the BMU v2 PCB?

The BMU v2 measures 194.9 × 100 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the BMU v2?

125 components, from 37 distinct parts. The full bill of materials is listed on this page.

Where can I download the BMU v2 design files?

From the KomplexKapharnaum/KXKM_Batterie_Parallelator repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the BMU v2 design in my own project?

Yes, under the terms of its GPL-3.0 license, which KomplexKapharnaum chose for the repository.

More boards in KXKM_Batterie_Parallelator

Earlier revisions in the repo: BMU v1

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