1 /* This file has been prepared for Doxygen automatic documentation generation.*/
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2 /*! \file *********************************************************************
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5 * Li-Ion specifications
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7 * Contains example definitions of Li-Ion battery specifications.
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9 * \par Application note:
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10 * AVR458: Charging Li-Ion Batteries with BC100
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12 * \par Documentation:
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13 * For comprehensive code documentation, supported compilers, compiler
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14 * settings and supported devices see readme.html
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17 * Atmel Corporation: http://www.atmel.com \n
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18 * Support email: avr@atmel.com \n
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19 * Original author: \n
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24 * $URL: http://svn.norway.atmel.com/AppsAVR8/avr458_Charging_Li-Ion_Batteries_with_BC100/tag/20070904_release_1.0/code/IAR/LIIONspecs.h $
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25 * $Date: 2007-08-10 09:28:35 +0200 (fr, 10 aug 2007) $\n
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26 ******************************************************************************/
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28 #ifndef LIIONSPECS_H
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29 #define LIIONSPECS_H
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32 Information on Varta EasyPack 66590 711 099 collected by M. Thomas:
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35 Pad 1 - marked with + : Battery +
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36 Pad 2 - not marked : ID-Resistor (RID) to Pad 4, 3.9kOhm
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37 Pad 3 - not marked : NTC to Pad 4, 10kOhm B=3435K
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38 Pad 4 - marked with - : Battery -
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39 -> 1Wire not available
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41 Capacity: nom. 550mAh (min. 520 mAh) at 0.2C from 4.2V to 3.0V
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42 Nominal Voltage: 3.7V, Range: 2.75V - 4.2V
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43 Charging Method: Constant Current + Constant Voltage
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44 Charge Voltage: 4.2V
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45 Initial charge Current: std. 260mA, rapid 520mA
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46 Charging cut of either:
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47 (a) at time: std. 5h, rapid 3h
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48 (b) by min current of 10mA
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49 Temparature 0 to 45degC
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50 Discharge max. Current: 1040mA
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52 overcharge : 4.35V (resume at 4.0V)
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56 Additional from PoliFlex-Handbook:
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57 - fast charging in termperatur-range 0 - 45degC
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58 - max charge current 1C (=550mA here)
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59 - max charge current has to be limited stricly to 4,2V +/- 50mV
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60 - stop charge 3h after start of when current is <0.02C (=11mA here)
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64 //******************************************************************************
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66 //******************************************************************************
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67 // This is for common NiMH batteries.
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68 #define CELL_VOLTAGE_SAFETY 0 /*!< \brief Buffer for unmatched batteries.
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70 * If we are charging a multicell battery and the cells aren't matched, we
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71 * may risk overcharging at least one. Therefore, we may subtract this constant
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72 * per additional cell in battery to allow for a "buffer".
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74 * \note Set to 0 if batteries are properly matched.
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76 * \note If this is changed to something higher than (CELL_VOLTAGE_MAX -
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77 * CELL_VOLTAGE_LOW), and the number of cells is great enough, the limit
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78 * BAT_VOLTAGE_LOW will become higher than BAT_VOLTAGE_MAX. This will cause
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79 * the charger to keep trying to charge, but instantly finishing because
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80 * the battery voltage is already at max.
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82 //! Maximum charge voltage for cell, in mV.
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83 #define CELL_VOLTAGE_MAX 4200
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85 //! Minimum voltage to consider cell charged at, in mV.
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86 #define CELL_VOLTAGE_LOW 4050
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88 //! Minimum voltage to start charging at, in mV.
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89 #define CELL_VOLTAGE_MIN 2750
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91 //! Target voltage during prequalification, in mV.
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92 #define CELL_VOLTAGE_PREQUAL 3000
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95 //******************************************************************************
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97 //******************************************************************************
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98 // Battery-definitions.
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99 //! Number of cells in battery.
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100 #define BAT_CELL_NUMBER 1
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102 //! Maximum cell temperature (Celsius).
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103 #define BAT_TEMPERATURE_MAX 45
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105 //! Minimum Cell temperature (Celsius).
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106 #define BAT_TEMPERATURE_MIN 0
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108 //! Maximum time for prequalification, in minutes.
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109 #define BAT_TIME_PREQUAL 9
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111 //! \brief Constant charge current, in mA, during prequalification mode.
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112 //! \note This is typically lower than the main charge current.
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113 #define BAT_CURRENT_PREQUAL 150
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115 //! Charge current hysteresis, in mA.
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116 #define BAT_CURRENT_HYST 5
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118 //! Charge voltage hysteresis, in mV.
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119 #define BAT_VOLTAGE_HYST 10
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121 //! Maximum battery voltage, in mV.
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122 #define BAT_VOLTAGE_MAX (CELL_VOLTAGE_MAX * BAT_CELL_NUMBER) - \
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123 ((BAT_CELL_NUMBER - 1) * CELL_VOLTAGE_SAFETY)
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125 //! Minimum voltage, in mV, to consider battery charged.
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126 #define BAT_VOLTAGE_LOW (CELL_VOLTAGE_LOW * BAT_CELL_NUMBER)
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128 //! Minimum voltage, in mV, to consider battery safe to charge.
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129 #define BAT_VOLTAGE_MIN (CELL_VOLTAGE_MIN * BAT_CELL_NUMBER)
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131 //! Charge voltage to achieve, in mV, during prequalification mode.
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132 #define BAT_VOLTAGE_PREQUAL (CELL_VOLTAGE_PREQUAL * BAT_CELL_NUMBER)
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134 #endif // LIIONSPECS_H
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