Patent ID: 9142991
Filing Date: 2015-09-22
Classification: H02J

Abstract:
1. A current regulation system, generating a charging current curve for charging a rechargeable battery, the system coupled to a power converter and the rechargeable battery, receiving an input voltage of the power converter and outputting an output voltage to the rechargeable battery, the system comprising: a current regulation module coupled to the power converter, outputting a conversion current in a constant current mode and a constant voltage mode; a voltage-to-current regulation module coupled to the rechargeable battery, generating a voltage conversion current according to the output voltage and a first reference voltage in the constant voltage mode; a temperature-to-current regulation module generating and outputting a temperature conversion current according to a temperature of the rechargeable battery in the constant current mode and the constant voltage mode; and a resistance coupled to the current regulation module, the voltage-to-current regulation module and the temperature-to-current regulation module, the resistance receiving the conversion current, the voltage conversion current and the temperature conversion current, wherein the resistance includes a resistance voltage and the resistance voltage includes a constant value; when the resistance regulates the voltage conversion current or the temperature conversion current in the constant current mode and the constant voltage mode, the constant value is maintained so the conversion current is gradually weakened; the charging current curve is regulated when the power of the rechargeable battery is full; wherein when the rechargeable battery is charging in the constant current mode, all the conversion current flows through the resistance; when the output voltage reaches a first threshold value, the rechargeable battery is charging in the constant voltage mode so the voltage conversion current flows through the resistance and is gradually amplified and the conversion current is gradually weakened; when the amount of the conversion current flowing through the resistance reaches a second threshold value, the power of the rechargeable battery is full and the charging current curve is regulated.