UPS discharge detection device and system

The utility model provides a UPS discharge detection device and system. The UPS discharge detection device is provided with a switch circuit, an electric quantity detection circuit, a controller and atimer. The controller is respectively connected with the timer, one end of the electric quantity detection circuit and the first end of the switching circuit; the UPS is electrically connected with the other end of the electric quantity detection circuit and the second end of the switch circuit respectively, and the third end of the switch circuit is electrically connected with an external powersupply, so that automatic stop control and timing control in the discharging process of the UPS are realized, and the phenomena that the battery is damaged due to excessive self-discharging and the discharging time is inaccurate to record can be effectively prevented; and the service life loss of the UPS is reduced, and the accuracy and efficiency of the discharge detection of the UPS are improved. 本实用新型提供一种UPS电源放电检测装置及系统，