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US 6,646,442 B2Granted
Voltage detection device for a battery package
AssigneeDenso Corporation
InventorTomoya Katoh
Life of this patent
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AssigneeDenso Corporation
InventorTomoya Katoh
Estimating the term…
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.
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;
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;
Dependencies are inferred from the claim text.