Abstract: The invention concerns an electrochromic glazing system, with an electrochromic pane unit and at least one other pane, which are joined to one another in the edge area by means of a spacer frame, forming an interspace, and with a temperature sensor for detection of the temperature of the electrochromic pane unit. To optimize its location, according to the invention the temperature sensor is arranged in the region of the spacer frame, between the electrochromic pane unit and the other pane. The invention takes advantage of the fact that the spacer frame area represents a thermal bridge between the panes of a double-glazing unit which is especially suitable for the arrangement of a temperature sensor.

Abstract: A process is disclosed for driving an electrochromic element which consists of at least the following layers: a first electrode layer; a first layer in which ions can be reversibly intercalated; a transparent ion-conducting layer; a second layer in which ions can be reversibly intercalated; and a second electrode layer. One of the layers in which ions can be reversibly intercalated is an electrochromic layer and the other layer acts as a counter-electrode to the electrochromic layer. A voltage with values in a redox stability range of the electrochromic layer system is applied to the electrode layers and causes a change in color. The process is characterised in that the current (I) which flows through the electrochromic element is continuously measured. During a starting phase of the change in color, the voltage (U) rises or diminishes continuously to a maximum, predetermined, temperature-dependent end value (Umax).