In the application scenarios of electric bicycles (eBike), the battery management system (BMS) plays a vital role. It monitors the battery voltage, temperature, charge and discharge status in real time to ensure that the battery operates within a safe range and prevent overcharging, overdischarging, short circuit and other situations. BMS optimizes the energy utilization efficiency of the battery, extends the battery life, and improves the range and stability of riding. In addition, it can also effectively cooperate with other electronic systems of electric bicycles such as electric drive and electronic control systems to provide accurate power information, help users better manage energy consumption during riding, and ensure a safer and more reliable riding experience.