Power management method, system, device and medium for life support equipment

A power management system for life support equipment, characterized in that the system is applied to a power management module, and the system comprises:

• an external energy storage power supply voltage monitoring unit, a battery monitoring unit and a circuit control unit, the method further comprising:
• performing a first real-time monitoring on the external energy storage power supply voltage by the external energy storage power supply voltage monitoring unit;
• controlling, by the circuit control unit, the external energy storage power supply to directly power a main device, and charging a first battery and a second battery at the same time, and continuing, by the external energy storage power supply voltage monitoring unit, to perform first real-time monitoring on the voltage of the external energy storage power supply in response to the voltage of the external energy storage power supply not meeting a first preset condition;
• reducing, by the circuit control unit, the first charging power duty cycle of the first battery and the second battery according to a first preset ratio in response to the voltage of the external energy storage power supply meeting the first preset condition;
• and
• recording, by the circuit control unit, a number of first-stage adjustment times and the corresponding first-stage adjustment time;
• calculating, by the circuit control unit, in sequence a first-stage adjustment time difference between two adjacent first-stage adjustment times;
• determining, by the circuit control unit, whether the first-stage adjustment time difference of each first-stage adjustment satisfies a requirement of increasing or decreasing in sequence;
• fitting, by the circuit control unit, a straight line adjustment function between the time differences of the first-stage adjustment and a corresponding number of first-stage adjustment times;
• and
• continuing to reduce a first charging power duty ratio of the first battery and the second battery according to the first preset ratio by a first preset time threshold before the predicted next first-stage adjustment time;
• wherein the first preset condition is set as the voltage of the external energy storage power supply being lower than a first preset threshold value for a continuous first time period, the first time period is 500 milliseconds-1000 milliseconds, and the first preset threshold value is 90% to 95% of the normal value of the external energy storage power supply voltage.