2 layers30 × 47.2 mm
MotorDriverModule
AlfredJT/PWM-DC-Motor-Driver-PCB
Motor driver module for two brushed motors, allowing you to control higher voltage motors with lower voltage MCUs.
11 partsMIT
2 layers147.2 × 58.3 mm
Li IonBatteryProtection
cnobile2012/Li-IonBatteryProtection6Circuit to protect Li-Ion and Li-Po batteries at the cell level.
- Size
- 147.2 × 58.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 81
- Nets
- 38
- Pads
- 180
- Tracks, vias
- 330, 3
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 23 Jun 2017
- Updated
- 7 Oct 2017
Overview
Li IonBatteryProtection is an open-source printed circuit board by cnobile2012, from the cnobile2012/Li-IonBatteryProtection repository on GitHub, published under the MIT licence. It is a 2-layer board of 147.2 × 58.3 mm with 81 parts on 38 nets, routed with 330 tracks and 3 vias.
It is built around the LM311N, 2N2222A and IRF540N. Its parts include 31 resistors, 8 ICs, 6 transistors, 4 capacitors and 4 diodes. It belongs with the power boards of this library.
Main components
3
LM311N
DIP-80℃~+70℃ 1 250nA 300ns 36V 50nA 5V~30V 7.5mA 7.5mV ±15V DIP-8 Comparators ROHSHGSEMIComparators
2N2222A
TO-92-55℃~+150℃ 1 NPN 100MHz 100nA 400 40V 5V 600mA 600mV 625mW NPN TO-92 Bipolar (BJT) ROHSSlkorBipolar (BJT)
IRF540N
TO-2201 N-channel 1.35nF 100V 130W 280pF 33A 35mΩ@10V 4V 52nC@10V 85pF N-Channel TO-220 MOSFETs ROHSOSENMOSFETs
README
README.rstLi-Ion Battery Protection
The MIT License (MIT)
This is an electronics project to help protect Li-Ion batteries and the circuits they are used in. The circuit will work with two to four cells and protects the battery at the cell level. Any one cell that goes below the recomended level will cause the entire curcuit to shut down.
======= LTspice
Spice files for testing the circuit virtually.
Truth Table One: Battery Voltage Normal
+-------+-------+-------+-------+-------+ | U1/U3 | Q1/Q2 | U2/U4 | Q3 | Q4 | +=======+=======+=======+=======+=======+ | HI | LOW | LOW | HI | LOW | +-------+-------+-------+-------+-------+ | N/A | ON | ON | OFF | ON | +-------+-------+-------+-------+-------+
Truth Table Two: Battery Voltage Below Normal
+-------+-------+-------+-------+-------+ | U1/U3 | Q1/Q2 | U2/U4 | Q3 | Q4 | +=======+=======+=======+=======+=======+ | LOW | HI | HI | LOW | HI | +-------+-------+-------+-------+-------+ | N/A | OFF | OFF | ON | OFF | +-------+-------+-------+-------+-------+
===== KiCAD
KiCAD files of the schematic and PCB.
Feel free to contact me at: carl dot nobile at gmail.com
Parts
81| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | TEST_1P | Measurement_Points:Measurement_Point_Round-TH_Big | TP1, TP2, TP3, TP4, TP6, TP9, W5, W7, W8 |
| 5 | 2N2222A | TO_SOT_Packages_THT:TO-18_3Pin | Q2, Q3, Q4, Q5, Q6 |
| 5 | TEST_1P | Measurement_Points:Measurement_Point_Round-TH_Small | TP5, TP7, TP8, TP10, TP11 |
| 4 | 100 | Resistors_ThroughHole:Resistor_Horizontal_RM10mm | R6, R13, R20, R27 |
| 4 | 100k | Resistors_ThroughHole:Resistor_Horizontal_RM10mm | R5, R12, R19, R26 |
| 4 | 10k | Resistors_ThroughHole:Resistor_Horizontal_RM10mm | R1, R8, R15, R22 |
| 4 | 120 | Resistors_ThroughHole:Resistor_Horizontal_RM10mm | R7, R14, R21, R28 |
| 4 | 1Meg | Potentiometers:Potentiometer_Bourns_3296Y_3-8Zoll_Angular_ScrewUp | R3, R10, R17, R24 |
| 4 | 1N4728 | Diodes_ThroughHole:Diode_DO-41_SOD81_Horizontal_RM10 | D1, D2, D3, D4 |
| 4 | 1k | Resistors_ThroughHole:Resistor_Horizontal_RM10mm | R2, R9, R16, R23 |
| 4 | 47k | Resistors_ThroughHole:Resistor_Horizontal_RM10mm | R4, R11, R18, R25 |
| 4 | LM311N | Housings_DIP:DIP-8_W7.62mm | U1, U3, U5, U7 |
| 4 | PC817 | Housings_DIP:DIP-4_W7.62mm | U2, U4, U6, U8 |
| 1 | 0.001uf | Capacitors_ThroughHole:C_Rect_L7_W2_P5 | C3 |
| 1 | 0.1uf | Capacitors_ThroughHole:C_Rect_L4_W2.5_P2.5 | C1 |
| 1 | 0.22uf | Capacitors_ThroughHole:C_Rect_L7_W2_P5 | C2 |
| 1 | 20k | Resistors_ThroughHole:Resistor_Horizontal_RM10mm | R31 |
| 1 | 3.3k | Resistors_ThroughHole:Resistor_Horizontal_RM10mm | R30 |
| 1 | 47uf | Capacitors_ThroughHole:C_Radial_D5_L11_P2.5 | C4 |
| 1 | 5.1k | Resistors_ThroughHole:Resistor_Horizontal_RM10mm | R29 |
| 1 | CONN_01X02 | Terminal_Blocks:TerminalBlock_Pheonix_MKDS1.5-2pol | J2 |
| 1 | CONN_02X03 | Pin_Headers:Pin_Header_Straight_2x03 | J1 |
| 1 | IRF540N | TO_SOT_Packages_THT:TO-220_Neutral123_Horizontal | Q1 |
The 69 most common of 81 parts.
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Questions
How big is the Li IonBatteryProtection PCB?
It measures 147.2 × 58.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Li IonBatteryProtection use?
81 parts, built around the LM311N, 2N2222A and IRF540N. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Li IonBatteryProtection KiCad files?
From the cnobile2012/Li-IonBatteryProtection repository on GitHub, at the commit this page was made from: the board is KiCad/Li-IonBatteryProtection.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Li IonBatteryProtection design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).