Electronic anode protection method and equipment and water heater

The invention relates to an electronic anode protection method and device and a water heater. The method comprises the following steps: switching a working mode of a driving device of an anode bar into an input detection mode, and detecting and acquiring an initial voltage of a metal liner by using the anode bar in the input detection mode; acquiring an output voltage according to the initial voltage; and switching the working mode of the driving device into an output voltage mode, and controlling the driving device to output the output voltage to the anode bar. The water quality conductivity detection device can be switched between an input detection working mode and an output voltage working mode, and the water quality conductivity detection function is automatically achieved, so that the production cost can be reduced, and the accuracy is improved. 本发明涉及一种电子阳极保护方法、设备及热水器。该方法包括：将阳极棒的驱动装置的工作模式切换为输入检测模式，并在输入检测模式下利用阳极棒检测并获取金属内胆的初始电压；根据初始电压获取输出电压；将驱动装置的工作模式切换为输出电压模式，并控制驱动装置输出该输出电压至阳极棒。本发明可以在输入检测与输出电压两种工作模式下切换，自