Patent ID: 6646442
Filing Date: 2003-11-11
Classification: B60L,G01R,Y02T

Abstract:
A voltage detection device for a battery package including high and low voltage groups of battery modules connected in series, said high and low voltage groups including N of said battery modules connected in series, respectively, a positive terminal of the Lth battery module in said high voltage group outputting the highest voltage potential in said battery package when L=1, a negative terminal of the Lth battery module in said low voltage group outputting the lowest voltage potential in said battery package when wherein L=1, 1&lE;L&lE;N;N junction points; 2N current limiting resistive elements, a positive terminal of said Lth battery module in said high voltage group being connected to the Lth junction point through one of said current limiting resistive elements, a negative terminal of said Lth battery module in said low voltage group being connected to said Lth junction point through another one of said current limiting resistive elements; and voltage detection means for detecting and outputting voltage potentials at said N junction points.