The two-way balanced design of the module
To extend battery life, charge and discharge the inspiron e1405 battery should be to enable all of the individual remain in the same state of charge, while the battery voltage is the battery inconsistency of the most intuitive and most easy to measure the performance of the form, so the ideological balance of charge gist is the charge-discharge process as much as possible to enable the VGP-BPS8, VGP-BPS8A battery to maintain the same level.
Based on the above reasons, this design is used to compare the parameters of voltage, through the MCU control, to achieve a high-voltage battery to transfer energy directly to the battery voltage is low. (Figure 2 omitted)
Among them, a balanced circuit used to implement the VGP-BPS9, VGP-BPS9/B battery between two adjacent energy balance; data acquisition circuit the battery parameters in real-time collection, the main acquisition parameters are the battery terminal voltage and temperature, through the A / D converted to give microcontroller for battery real-time monitoring; microcontroller to monitor battery state and also of the balance control circuit, once voltage difference was found between the battery reached a certain value, that is, to the corresponding FET send trigger pulse to turn-on voltage of the battery to the high inductance charge FET end, the inductor stored energy to supplement VGP-BPS9/S, VGP-BPS9A/B battery charging voltage is low.