Abstract:
A battery pack fault detection device and a method for detecting a fault of a battery pack are provided. The battery pack fault detection device comprises: N diodes in which each battery is connected with one of the N diodes in anti-parallel via a detecting line; N+1 switches; a switch control circuit (4) for switching on or switching off each switch; a voltage collection circuit (5) connected with the switch control circuit (4) for collecting a voltage of the battery; an analog-to-digital conversion circuit (6) for performing an analog-digital conversion on the voltage of the battery to obtain a digital voltage; a detection control circuit (7) connected with the switch control circuit (4) and the analog-to-digital conversion circuit (6) for controlling the switch control circuit (4) to switch on or off each switch and for comparing the digital voltage with a preset value to judge a fault of the battery pack.
Abstract:
A source drive device and a driving method for LCD are provided. The source drive device comprises a grayscale producing circuit (10), a first switching circuit (T1), a source driver (20) and a logic control time sequence circuit (30). The source driver (20) comprises a source drive latch (2) and a plurality of branches, wherein each branch comprise a D/A converter (1) , a source driver cache (3), a second switching circuit (T2) and a third switching circuit (T3). The logic control time sequence circuit (30) is configured so that there is at least one charge-sharing time interval in which the first switching circuit (T1) is in OFF state while the second switching circuit (T2) and the third switching circuit (T3) are in ON state.