2 layers65 × 56 mm
2 layers95 × 65 mm
SolarCharger2017
curiouselectric/Solar_Charger1A DIY solar LiIon charger unit.
- Size
- 95 × 65 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 23
- Nets
- 17
- Pads
- 79
- Tracks, vias
- 206, 3
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 12 Jun 2017
- Updated
- 24 Dec 2017
Overview
SolarCharger2017 is an open-source printed circuit board by curiouselectric, from the curiouselectric/Solar_Charger repository on GitHub. It is a 2-layer board of 95 × 65 mm with 23 parts on 17 nets, routed with 206 tracks and 3 vias.
Its parts include 6 connectors, 4 resistors, 2 capacitors, 2 diodes and 1 IC. It belongs with the power boards of this library.
README
README.mdSolar_Charger
A DIY Solar Charger for 18650 Lithium Ion cells.
Get off-grid, power your remote project and learn about solar power with this DIY solar charger kit.
This is a relatively simple open-source kit, sold at www.curiouselectric.co.uk and on Tindie: https://www.tindie.com/products/reinnovation/solar-matic/, which includes two 1Wp solar PV panels and all the parts required to recharge standard 18650 lithium ion cells.
The charger IC is the BQ24210 from Texas Instruments. This is an amazing single-cell Lithium Ion battery charge IC with up to 800mA current rating. It is designed to maximise the output from a solar PV cell into the battery. This is a very small surface mount component in a WSON-10 package, so we have soldered this to the PCB for you.
The kit is uses a DC-DC converter which ensures a regulated 5V output, either for a USB connector output or for screw terminals. The DC-DC converter is controlled via a switch on the side of the PCB.
The unit comes with a simple laser-cut enclosure so it can be placed on a window-sill or hung somewhere.
This is a reasonably simple kit which requires some soldering and a few fiddly connections.
Note: Depending upon the capacity of the 18650 cell, in the UK the battery will fully recharge in around 3-5 days during an average summers day. This totally depends upon the solar resource available.
Note: The enclosure is NOT waterproof or for outdoor use.
This repository is for all the design files for this project. This includes:
- PCB design (KiCAD files)
- Enclosure Design (.dxf designs)
- Instructions (open-office and .pdf)
Parts
23| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 1uF | matts_components:C1V7_lg_pad_lg_hole | C1, C2 |
| 2 | 2.2k | REInnovationFootprint:TH_Resistor_1 | R3, R4 |
| 2 | LiIon Cell V | REInnovationFootprint:SIL_2_screw_+_JST_2mm | P2, P5 |
| 1 | 100k | REInnovationFootprint:TH_Resistor_1 | R2 |
| 1 | 18650 LiIon Cell | REInnovationFootprint:TH_LiIon_Holder | BT1 |
| 1 | 1k | REInnovationFootprint:TH_Resistor_1 | R1 |
| 1 | 5V ON | REInnovationFootprint:SW_SPDT_R_Angle_ALIEX | SW1 |
| 1 | 5V OUT | REInnovationFootprint:SIL-2_screw_terminal | P1 |
| 1 | BQ24210 | REInnovationFootprint:SM_WSON-10-2x3 | U1 |
| 1 | CHG | REInnovationFootprint:TH_LED-5MM_larg_pad | D2 |
| 1 | DC-DC | REInnovationFootprint:TH_DCDC_Converter_USB | DCDC1 |
| 1 | DC-DC | REInnovationFootprint:TH_DCDC_Converter_NoUSB | DCDC2 |
| 1 | LOGO1 | CuriousElectric3:CEC_Globe_10mm_FCU | LG1 |
| 1 | LOGO2 | CuriousElectric3:TCEC_Words_13mm | LG2 |
| 1 | PCB | REInnovationFootprint:PCB_65x90mm | PCB1 |
| 1 | PG | REInnovationFootprint:TH_LED-5MM_larg_pad | D3 |
| 1 | PV <2W 5.5V | REInnovationFootprint:PV_130mmx65mm_NoOutline | SC1 |
| 1 | PV IN 1 | REInnovationFootprint:SIL_2_screw_+_JST_2mm | P3 |
| 1 | PV IN 2 | REInnovationFootprint:SIL_2_screw_+_JST_2mm | P4 |
| 1 | USB_A | Connectors:USB_A | P7 |
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Questions
How big is the SolarCharger2017 PCB?
It measures 95 × 65 mm and has 2 copper layers, 1.6 mm thick.
What parts does the SolarCharger2017 use?
23 parts. 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 SolarCharger2017 KiCad files?
From the curiouselectric/Solar_Charger repository on GitHub, at the commit this page was made from: the board is Solar Charger 2017 PCB/SolarCharger2017.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the SolarCharger2017 design in my own project?
Its repository states no licence, so its author keeps all rights: ask curiouselectric before reusing the design.