Contactor adhesion detection method

The invention discloses a contactor adhesion detection method, and relates to the technical field of batteries. The contactor adhesion detection method comprises the following steps: acquiring first voltage values of positive and negative buses; controlling a control switch to be switched on and off according to a preset logic switching sequence so as to obtain a corresponding second voltage value; comparing the first voltage value with the second voltage value; and if so, the main negative contactor is in a normal off state. The invention solves the problems that the conduction or disconnection of a contactor is generally identified by front and back voltages of the contactor at present, the total voltage detection and the adhesion detection are combined together, the logic of a detection circuit and a diagnosis circuit is more and more complicated along with the increase of the number of relays, and the adhesion detection of a cathode relay is also difficult. 本发明公开了一种接触器黏连检测方法，涉及电池技术领域。其中，该接触器黏连检测方法，包括：采集正负