identifying type battery NOKIA| identifying type battery NOKIA Let us try to visualize the schematic of the Battery related components. This BSI point of the Battery is connected as shown below in the figure via a 10K resistor to a point on the CCONT IC. Also it is connected to 2.8volts supply line via a pull-up resistor of a value fixed at 150K.
identifying type battery NOKIA resistor
The thermistor RT is a thermal kind of resistor, whose value decreases as it’s temperature rises. As above in the case of BSI point, the BTEMP point of the Battery is connected with a pull-up (to pull up the voltage) resistor of 100K.
When the Battery is put for charging in the mobile phone, there is normally a little rise in the temperature of the battery. This will cause a rise in temperature of the Resistance RT inside the battery casing. Now as per the characteristic of the NTC resistor , it’s resistance value decreases identifying type battery NOKIA as it’s temperature rises. This also changes the voltage at the BTEMP point of the battery as well as the CCONT BTEMP pin. This change is always fed to the CPU which keeps monitoring it continuously.
identifying type battery NOKIA by Energy Managemant Software
This is always online referred to the Energy Managemant Software loaded in the Memory ICs (Flash & RAM ICs) inside the phone. When the temperature inside the battery increases beyond it’s allowed limit, this change in voltage at the BTEMP point will be processed in the CPU and the Memory ICs and the CPU will then ask the CCONT IC to stop supplying the charging current to the battery and will stop charging absolutely to save the battery from any damage that may occur due to it’s rise in temperature. identifying type battery NOKIA
accurately and perfectly identifying type battery NOKIA
Thus, in Nokia 3310-3315-3330-3390 etc. series of Phones, all the functions of charging are achieved very accurately and perfectly with the use of :
(1) Chaps (Charging IC)
(2) CCONT (Charging Controller IC)
(3) MAD (CPU IC)
(4) Memory ICs (Flash & RAM ICs) &
(5) Energy Management Software loaded in the Flash IC.
this the end of identifying type battery NOKIA.