Voltage detection device for a battery package
First Claim
1. 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≦
- L≦
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.
1 Assignment
0 Petitions
Accused Products
Abstract
To detect terminal voltages in a battery package including high and low potential groups connected in series, a positive terminal of one battery module in the high potential group outputting the highest potential is connected through a resistor to a junction point connected to a negative terminal of another battery module in the low potential group outputting the lowest potential through another resistor having the same resistance. Other positive and negative terminals of pairs of module battery outputting successive lower voltage potentials in the high potential group and successive higher voltage potentials in the low potential group are connected to junction points through resistors, respectively. Voltages at junction points, differences in voltage potential between the successive two junction points, or differences in potential between the junction points and a middle potential at the junction between the high and low groups is measured. Battery module voltages or variation are calculated.
19 Citations
12 Claims
-
1. 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≦
- L≦
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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- L≦
-
9. 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≦
- L≦
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 and operation means for detecting voltage potentials at said N junction points and for obtaining and outputting conditional data of said battery modules from said detected voltage potentials. - View Dependent Claims (10, 11, 12)
- L≦
Specification