HardLabs

BMS Hardware

MissouriMRDT·BMS_Hardware·Hardware/2023rev2.0/2023rev2.0.kicad_pcb

BMS Hardware PCB layout, top view — open source NXP board by MissouriMRDT

About the BMS Hardware PCB

BMS Hardware is an open source NXP PCB design by MissouriMRDT, published on GitHub. It is a 2-layer board measuring 279.4 × 181.4 mm, with 91 components from 35 distinct parts.

Its main chip is the Teensy4.1_DEV-16771, from the NXP family. Other key parts include the Opamp_Dual, INA195 and TSR_1-2450. By type, the board carries 42 resistors, 20 diodes, 8 ICs, 4 connectors, 3 capacitors and 1 transistor.

It belongs with the power & battery designs in this gallery.

From the project

Batteries + BMS + Chargers + Power Board = The Ultimate Mobile Power Source!

Battery Management System- this year it DOES THINGS (for real though!).

New for 2022: -Designed to monitor an 8s8p LiPo battery pack at a max 33.6V @ 160A peak. -The Cell Monitoring circuit uses the AS358MTR-E1 Op-Amp as it could be powered off of pack voltage. -Teensy 4.1 used as microcontroller for the board.

Main components on the BMS Hardware

Teensy4.1_DEV-16771Opamp_DualINA195TSR_1-2450

BMS Hardware bill of materials (BOM)

91 components, 35 distinct parts.

QtyPartRefs
1
Teensy4.1_DEV-16771
U1
4
Opamp_Dual
U2, U3, U4, U5
2
INA195
U6, U7
1
TSR_1-2450
U8
1
Q_NMOS_DGS
Q1
1
Conn_01x03
J1
2
Conn_01x09
J2, J3
1
Conn_01x04
J4
1
Buzzer
BZ1
1
AndersonPP
Conn1
1
Polyfuse
F1
6
MountingHole
H1, H2, H3, H4, H5, H6
1
SW_SPDT
SW1
1
BATT_GND_VIA
V1
1
BATT_PWR_VIA
V2
1
BMS_OUT_VIA
V3
1
ERR
D1
1
PACK_OUT
D2
1
5V
D3
1
3V3
D4
Show 15 more
QtyPartRefs
8
D_Schottky
D5, D6, D7, D8, D9, D10, D11, D12
8
D_Zener
D13, D14, D15, D16, D17, D18, D19, D20
1
22uF
C1
1
1uF
C2
1
10uF
C3
1
100K
R1
1
4.7k
R2
1
820
R3
2
10k
R4, R43
2
100
R5, R8
1
3k
R6
1
300
R7
16
31.5k
R9, R10, R11, R12, R13, R14, R15, R16 +8
16
40k
R25, R26, R27, R28, R29, R30, R31, R32 +8
1
4k
R41

BMS Hardware design files

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

BMS Hardware: common questions

What microcontroller does the BMS Hardware use?

The BMS Hardware is built around the Teensy4.1_DEV-16771, from the NXP family.

How big is the BMS Hardware PCB?

The BMS Hardware measures 279.4 × 181.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the BMS Hardware?

91 components, from 35 distinct parts. The full bill of materials is listed on this page.

Where can I download the BMS Hardware design files?

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

Can I use the BMS Hardware design in my own project?

The repository has no license, so all rights stay with MissouriMRDT. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the BMS Hardware without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug NXP firmware against it before you order a PCB.

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