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Monitoring Battery Quality and reduce waste

Handheld Readout Device(HRD) for Battery Management Systems. Measure rechargeable batteries.

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Rechargeable batteries are more and more dominating our modern life. We find them in our smartphones and notebooks, in e-bikes and e-cars but also in many toys and basically everywhere where wired power supply is absent. The charge state of these batteries is usually reported by highlighting a certain portion of a bar, representing full charge. But is this indication always correct and how can I check whether the full capacity of my battery is still available?

The efficient use of batteries is especially important, as batteries are difficult to recycle and thus constitute a burden for the environment. Unfortunately, common BMSs do not display the stored data by default.

continuing description....

https://github.com/peterloes/HRD

Programmed (bit mask) for Battery Controller Types with 8-bit command.

Creation and expansion of different (Li-ion) battery pack manager | battery fuel (gas) gauge
with Communication interface SMBus! Do your part. :-)

Tested Firmware Version

  • TEXAS INSTRUMENTS bq40z50
  • ATMEL ATmega32HVB

Battery controller probing requests. 0x0A=Atmel, 0x16=TI

Actual Current is signed.

Power management for the LC-Display.

Display will be scrolled (11 digits).

HRD can be connected to external devices like personal computers to transfer and store the extracted technical data.

https://github.com/peterloes/HRD/blob/master/Getting_Started_Tutorial/1_poster_overview.pdf

The standalone HRD features EFM32 ...the world´s most energy friendly microcontrollers

ARM Cortex-M3 EFM32G230F128

Code Snippets

Make quick changes to the Source Code.

https://github.com/peterloes/HRD/blob/master/Software/main.c

   /*! List of items which can be displayed
     *
     * This array contains a list of items that can be displayed on the LCD.
     * Element 0 is a special case, it shows the name, version, and date of
     * the firmware image.  Usually up/down push buttons are used to select
     * the item to be displayed.
     *
     * The order of these items may be rearranged by the user.  Single or
     * groups of entries can be de-activated by commenting them out.
     */

static const ITEM l_Item[] =
{  // [1234567890123456]    Cmd                Frmt
    { ">>> HRDevice <<<",   SBS_NONE,            FRMT_FW_VERSION    },
    { "Battery at SMBus",   SBS_NONE,            FRMT_BAT_CTRL    },
    { "Supply Battery",     SBS_NONE,            FRMT_CR2032_BAT    },
    { "Manufacturer",       SBS_ManufacturerName,    FRMT_STRING    },
    { "Device Name",        SBS_DeviceName,        FRMT_STRING    },
    { "Device Type",        SBS_DeviceChemistry,    FRMT_STRING    },
    { "Serial Number",      SBS_SerialNumber,        FRMT_HEX    },
    { "Production Date",    SBS_ManufactureDate,    FRMT_DATE    },

https://github.com/peterloes/HRD/blob/master/Software/drivers/BatteryMon.c

    /*!@brief Probe List of supported Battery Controllers */
 

  static const BC_INFO l_ProbeList[] =
   {  //  addr    type        name (maximum 10 characters!)
   {  0x0A,    BCT_ATMEL,    "ATMEL"        },
   {  0x16,    BCT_TI,        "TI bq40z50",    },
   {  0x00,    BCT_UNKNOWN,    ""        }    // End of the list
   };

https://github.com/peterloes/HRD/blob/master/Software/drivers/BatteryMon.h

/*!@brief SBS Commands
 *
 * These are the defines for the registers of the battery controller.  Each
 * define contains the following bit fields:
 * - Bit 17:15 specify the controller type where the define belongs to.  Bit 16
 *   (0x10000) represents the Atmel controller, while bit 17 (0x20000) specifies
 *   the TI controller. If both bits are set (0x30000), the register exists in
 *  ...

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HRD_2021_bom.txt

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HRD_2016.brd.pdf

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HRD_2016.sch.pdf

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  • 1 × Housing TEKO Mod.10008
  • 3 × 5GSH935+1SS09-12.0 (Button)
  • 24 × Pin Header, vertical to increase display height. manufacturer number: MK01/50 Z.
  • 1 × Phoenix Contact MC 1.5/ 3-G-3.81 manufacturer number: 1803280
  • 1 × PTR Socket housing-cable AK(Z)1550 manufacturer number: 51550030025F

View all 6 components

  • Discussion

    Peter Loës10/11/2021 at 07:35 0 comments

    Probe for different Controller Types

    g_BatteryCtrlAddr: 0x00 - 0xFF

    This routine probes the type of battery controller.  This is done by checking
    dedicated I2C-bus addresses on the SMBus.  The following addresses and their
    corresponding controller type are supported:
    - 0x0A in case of Atmel, and
    - 0x16 for the TI bq40z50.

    Abstract SBS_Commands for different Manufacturer Registers

    SBS_DesignCapacity,           //!< 0x18 Word: in [mAh / 10mWh]

    SBS_DesignVoltage,             //!< 0x19 Word: in [mV]
    SBS_SpecificationInfo,         //!< 0x1A Word: Version and Revision
    SBS_ManufactureDate,        //!< 0x1B Word: [Year-1980:7|Month:4|Day:5]

    Expansion of item data

    This routine returns a formatted data string of the specified item data.
    It uses BatteryRegReadWord() and BatteryRegReadBlock() to read the data
    directly from the battery controller.

    case FRMT_MILLIAMP:    // Current in [±mA], +:charging, -:discharging
            sprintf (strBuf, "%5dmA", (int16_t)data);
            break;

    https://github.com/peterloes/HRD/blob/master/Software/drivers/Display.c

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