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Current-Limiter

kwiecinski·BMS-and-offgrid-photovoltaic-management-system·hardware/Balancer_v1.3/Current_Limiter/Current-Limiter.kicad_pcb

Current-Limiter PCB layout, top view — open source board by kwiecinski

About the Current-Limiter PCB

Current-Limiter is an open source PCB design by kwiecinski, published on GitHub under the MIT license. It is a 2-layer board measuring 99 × 99 mm, with 62 components from 27 distinct parts.

Other key parts include the FAN7382 and NE555D. By type, the board carries 18 resistors, 16 capacitors, 14 diodes, 5 connectors, 4 ICs and 2 transistors.

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 -…

Current-Limiter, from the project README
From the project README

Main components on the Current-Limiter

FAN7382NE555D

Current-Limiter bill of materials (BOM)

62 components, 27 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
FAN7382
U6, U8
2
NE555D
U7, U9
2
IRF540N
Q4, Q5
1
R-Shunt
J11
1
BATT_IN
J12
1
BATT_OUT
J13
1
batt-24V-balancer
J14
1
pwm-12v-local
J15
1
6,3A
F1
1
2A
F2
6
LL4148
D7, D8, D9, D17, D18, D19
2
BZV55B15
D10, D20
4
SM6T15A
D11, D12, D15, D16
2
YM3045
D13, D14
1
L
L1
6
100n
C12, C15, C18, C22, C25, C27
4
10n
C13, C14, C23, C24
2
1n
C16, C26
2
100u/35V
C17, C21
2
1u
C19, C20
Show 7 more
QtyPartRefs
4
10k
R21, R22, R36, R37
4
10R
R23, R31, R35, R38
2
100k
R24, R39
3
20A/75mV
R26, R27, R28
1
20A/75mV
R29
2
10R
R32, R34
2
1k
R33, R41

Current-Limiter 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.

Current-Limiter: common questions

How big is the Current-Limiter PCB?

The Current-Limiter measures 99 × 99 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Current-Limiter?

62 components, from 27 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 Current-Limiter 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 Current-Limiter design in my own project?

Yes, under the terms of its MIT license, which kwiecinski chose for the repository.

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