Energy storage device with output control function and charge and discharge control method thereof

Abstract

This invention discloses an energy storage device with output control function and its charging and discharging control method, belonging to the field of energy storage system technology. The control circuit of the energy storage device includes a charging and discharging control circuit, an energy storage unit, a bypass output circuit, a secondary voltage output circuit, and a detection circuit. The charging and discharging control circuit is responsible for controlling the charging and discharging process of the energy storage device. The bypass output circuit can bypass the current-limiting branch during discharge. The secondary voltage output circuit can output an adjustable secondary working voltage. The detection circuit can realize real-time monitoring of the device's working status. The corresponding charging and discharging control method adopts a differentiated threshold discharge control strategy with high opening and low breaking, which is synchronized with the bypass output control. It can accurately control the charging and discharging process of the energy storage device, avoid premature consumption of energy in the energy storage unit, reduce the risk of overheating of the current-limiting resistor, and effectively protect the front-end power generation system and the back-end power consumption equipment. The overall circuit structure is simple, low-cost, and suitable for various application scenarios.

Images