A method and device for controlling battery charging and discharging current
A charging and discharging current and battery charging technology, which is applied in battery circuit devices, charging/discharging current/voltage regulation, battery over-discharge protection, etc., can solve problems such as the inability to effectively control battery charging and discharging current, to prevent destructive damage, The effect of prolonging battery life and maintaining a healthy state
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[0069] In order to solve the problem in the prior art that the charging and discharging current of the battery cannot be effectively controlled, the embodiment of the present invention provides a solution for controlling the charging and discharging current of the battery. In this technical solution, after the hybrid energy storage system is powered on, the state of charge, state of health and open circuit voltage of the battery and the operating current of the hybrid energy storage system are first determined, and then the internal resistance of the battery is determined. The open-circuit voltage determines the upper voltage limit and the lower limit of the battery voltage. The hybrid energy storage system uses a bidirectional DC-DC converter to control the charge and discharge current of the battery according to the upper voltage limit and lower limit of the battery voltage. In this way, it can prevent the battery from causing destructive damage to the battery due to excessiv...
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