bladekp / li-ion-battery-test-bench

Li-Ion battery test bench monitor with web user interface over TCP/IP connection.

Li-Ion Battery Test Bench

This is a school project aimed to build system that can automatically charge and discharge Li-ion batteries at variable load. The purpose of this system is to study different battery types by monitoring cell voltage, temperature and current.

Compiling

• Download the GNU Arm Embedded Toolchain https://developer.arm.com/open-source/gnu-toolchain/gnu-rm
• On Windows download and install GNU Make https://www.gnu.org/software/make/ and add GnuWin32\bin to Windows environment variables path.

To build this project navigate to project directory on shell and run Makefile.

$ make -f .\Makefile

Flashing with ST-Link Utility software

• Click on "External Loader" from the menu and select N25Q128A_STM32F746G-DISCO
• Click on Target->Program and select "Li-Ion-Battery-Test-Bench.hex" under BUILD directory
• Hit on "Start" button to flash internal and external memory

Pinout

STM32F746G-DISCO PIN	Description
D13	LTC6811 SPI SCK
D12	LTC6811 SPI MISO
D11	LTC6811 SPI MOSI
D10	LTC6811 SPI CS
D9	Cell discharge relay 1
D8	Cell discharge relay 2
D7	Cell discharge relay 3
D6	Cell discharge relay 4
D5	Charging relay

Project pictures

• Web interface used to control test bench

• Test bench

Libraries used in this project

lwIP – A Lightweight TCP/IP stack

• https://savannah.nongnu.org/projects/lwip/
• Licence: https://github.com/Velli20/Li-Ion-Battery-Test-Bench/blob/master/Middlewares/Third_Party/LwIP/LWIP_LICENCE

FatFS – Generic FAT Filesystem Module

• http://elm-chan.org/fsw/ff/00index_e.html
• Licence: https://github.com/Velli20/Li-Ion-Battery-Test-Bench/blob/master/Middlewares/Third_Party/FatFs/src/FATFS_LICENCE

FreeRTOS – RTOS Kernel

• https://www.freertos.org/
• Licence: https://github.com/Velli20/Li-Ion-Battery-Test-Bench/blob/master/Middlewares/Third_Party/FreeRTOS/License/license.txt

STM32 HAL Driver

• Licence: https://github.com/Velli20/Li-Ion-Battery-Test-Bench/blob/master/Drivers/STM32F7xx_HAL_Driver/STM32_HAL_LICENCE

Linear Technology – LTC6811-1 Multicell Battery Monitor

• http://www.linear.com/product/LTC6811-1
• Licence: https://github.com/Velli20/Li-Ion-Battery-Test-Bench/blob/master/LTC6811/LTC6811_LICENCE