Patent ID: 6462550
Filing Date: 2002-10-08
Classification: B60K,G01R,Y10S

Abstract:
A voltage detection apparatus for detecting a voltage of at least one battery, said voltage detection apparatus comprising:capacitor means to which a voltage is applied from the at least one battery and in which an electric charge accumulates; adjustment means for adjusting potentials at a first end and a second end of the capacitor means such that a potential difference between a potential at said first end of the capacitor means and a reference potential is less than a potential difference between a potential at a first end of the at least one battery and the reference potential, and that a potential difference between a potential at said second end of the capacitor means and the reference potential is less than a potential difference between a potential at said second end of the at least one battery and the reference potential; and voltage detection means for detecting a voltage of the at least one battery based on a potential difference between said first end of the capacitor means and said second end of the capacitor means after the potentials of said first and second ends of the capacitor means have been adjusted by the adjustment means, said voltage detection means being connected to a resistance means, said resistance means coupled to said adjustment means.