Protection equipment for preventing lithium battery from being overcharged

The invention relates to the technical field of battery overcharge protection, in particular to lithium battery overcharge prevention protection equipment which comprises a shell, a protective cover, a protective chip, a liquid storage tank, a refrigeration sheet, a refrigeration circulation tank, a liquid inlet pipe, a liquid outlet pipe, a temperature detector, a supporting assembly and a buffer assembly. A charging circuit, a discharging circuit and an energy storage circuit are arranged in the shell; the protective cover is arranged in the shell; the protective chip is arranged on the protective cover; the liquid storage tank is arranged on the periphery of the protective cover and filled with refrigerants. The charging circuit, the discharging circuit and the energy storage circuit are separated, and the protection chip monitors the voltage between the positive electrode and the negative electrode of the battery. Over-charging and over-discharging of the battery are effectively avoided, and the service l