battery pulse charger circuit for use with standard charger

The voltage of rechargeable batteries increases as they are charged.

Charging ends when the battery voltage rises and the preset termination current value is reached.

The preset charge voltage has been reached but the battery voltage is still low.

Switch to constant voltage (CV) charging at the preset voltage value.Battery voltage increases, the resistance component decreases, allowing the battery to be charged with higher current.Constant current (CC) charging at the preset current value.Battery capacity is reduced through use and the voltage drops.→ Charging started when the battery is reduced to the preset recharge voltage value This is one of the methods used in ROHM charge control ICs. Operation switches between CC charging, which charges with a constant current, and CV that charges at a constant voltage, depending on the voltage of the rechargeable battery. Constant Current Constant Voltage Charging （CCCV :C onstant C urrent, C onstant V oltage） CCCV charging is a typical method of charging rechargeable batteries such as li-ion. （There is also a method where the voltage is initially low then gradually increased to prevent excessive temperature rise in the rechargeable battery）Ĭonstant Power Charging （CP :C onstant P ower） A constant charging method characterized by high initial current when the voltage is low, then decreasing current as the voltage gradually increases. The charging current is initially high then gradually decreases.

（There is also a method of charging at a low constant current or varying the current in stages to prevent overvoltage charge） Constant Voltage Charging （CV :C onstant V oltage） Constant voltage charging is a method of charging at a constant voltage to prevent overcharging. Main Charge Methods for Rechargeable Batteries Constant Current Charging （CC :C onstant C urrent） Constant current charging is a method of continuously charging a rechargeable battery at a constant current to prevent overcurrent charge conditions. The charge control IC monitors the voltage, current and temperature and performs optimized charge control tailored to the rechargeable battery with an eye towards safety and to extend battery life. Charging Method A charge control IC is an IC that charges rechargeable batteries and does the following: ・Controls the charge current, voltage, and power

Battery pulse charger circuit for use with standard charger