LITHIUM BATTERY SYSTEM AND OVERHEAD WORKING TRUCK

A lithium battery system and an overhead working truck. The lithium battery system comprises a battery (30) and a feedback current control apparatus (10). The feedback current control apparatus (10) comprises a first current capture device (40) that comprises: a first feedback current capture module (42) used for capturing feedback current; a first switch module (5, 6, 50) used for conducting or unidirectionally cutting off a main circuit; and a control module used for receiving a first voltage of one end of a driver (20) on the main circuit, a second voltage of one end of the battery (30), and the temperature of the battery (30), and when a difference value between the first voltage and the second voltage is greater than a preset voltage and the temperature of the battery (30) is less than or equal to a preset temperature, controlling the first switch module (5, 6, 50) to unidirectionally cut off the main circuit, so as to capture the feedback current by the first feedback current capture module (42) on a first current capture circuit. The technical solution can greatly reduce the probability of lithium precipitation of the battery (30) and the risk of thermal runaway of the battery (30).