Vehicle battery overcharging prevention system and method
AssigneeLG Energy Solution, Ltd.
InventorsWoo Yeol Kim, Jong Woo Lee
Life of this patent
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Abstract
A method and a system for preventing overcharging of a battery configured to supply electric power to a driving motor of an electric vehicle and an E-PTO are disclosed. The method includes: detecting a charging state of the battery; calculating an amount of reduction in output power by calculating an average input power input to the battery in an overcharging state of the battery and calculating the amount of reduction in power to be output by a charger based on the calculated average input power; and requesting a reduction in charging power to the charger based on the calculated amount of reduction in output power.
Claims17
A method of preventing overcharging of a battery configured to supply electric power to a driving motor of an electric vehicle and to an electric power take off (E-PTO), the method comprising:
- detecting a charging state of the battery;
- calculating an amount of reduction in output power by calculating an average input power input to the battery in an overcharging state and calculating the amount of reduction in power to be output by a charger based on the calculated average input power;
- and
- requesting a reduction in charging power to the charger based on the calculated amount of reduction in output power,
- wherein the requesting of the reduction in charging power includes requesting the charger to output a reduced charging power obtained by subtracting the calculated amount of reduction in output power from a power required by the E-PTO.
A system for preventing overcharging of a battery configured to supply electric power to a driving motor of an electric vehicle and to an electric power take off (E-PTO), the system comprising:
- an overcharge controller configured to control power input to the battery and the E-PTO and power output from a charger,
- wherein the overcharge controller comprises:
- a charging state detection circuit configured to check a charging state of the battery;
- a current detection circuit configured to detect an input current applied to the battery with the battery in an overcharged state;
- a power calculation circuit configured to calculate an input power based on the input current, to calculate an average input power based on the input power and a detection time, and to calculate an amount of reduction in power for the charger to reduce from a charging power based on the average input power;
- and
- a power reduction request circuit configured to request the charger to output a reduced charging power obtained by subtracting the calculated amount of reduction in power from a power required by the E-PTO.
Dependencies are inferred from the claim text.