Charge and discharge protector for two-cell lithium ion battery

The invention designs a charge and discharge protector for a single-cell lithium ion battery. The charge and discharge protector comprises a discharge control unit, a charge control unit, a lithium ion battery, a recoverable fuse, a charge and discharge positive end, a charge negative end and a discharge negative end. Compared with the prior art, the discharge control unit is only provided with six discrete devices, the charge control unit is also only provided with six discrete devices, the resettable fuse is added, and the whole single-cell lithium ion battery charge and discharge protector is only provided with thirteen conventional discrete devices, so that three protections of over-charge, over-discharge and over-current are realized, the structure is very simple, the cost is very low, and the protector is suitable for protection control of the single-cell lithium ion battery; a charging cut-off voltage and a discharging cut-off voltage can be set, so that the phenomenon of over-charging or over-discharg