Patent ID: 8803478
Filing Date: 2014-08-12
Classification: G01R,H02J

Abstract:
1. An analog switch for measuring a voltage value of a battery, the analog switch comprising: a flying capacitor comprising first and second terminals; a first switch unit coupled to the first and second terminals of the flying capacitor, the first switch unit being configured to transfer a voltage between first and second terminals of the battery to the flying capacitor; a second switch unit coupled to the first terminal of the flying capacitor, the second switch unit being configured to transfer a voltage of the flying capacitor to an analog-to-digital (A/D) converter; a first diode coupled between the second terminal of the flying capacitor and a first capacitor for storing a supply voltage, the first diode being configured to protect a voltage source of the supply voltage from a surge current, the first diode comprising an anode coupled to a first terminal of the first capacitor and a cathode coupled to the second terminal of the flying capacitor; and a voltage correction unit for correcting the measured voltage value of the battery, the voltage correction unit comprising a second diode coupled to the first diode in parallel, wherein