Battery voltage detection device
First Claim
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1. A battery voltage detection device comprising:
- a battery;
a voltage detection circuit; and
a low-pass filter provided between the battery and the voltage detection circuit,wherein the low-pass filter includes a capacitor of which one end is connected to a terminal of the battery and the other end is connected to a voltage source outputting a voltage higher than a terminal voltage of the battery;
wherein the battery is a battery pack in which a plurality of unit batteries are connected in series with each other;
wherein the low-pass filter is provided for each of the unit batteries, andwherein each of the other ends of the capacitors is connected to the voltage source via a reference voltage source outputting a voltage obtained by adding a predetermined voltage to a terminal voltage of the unit battery corresponding thereto.
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Abstract
A battery voltage detection device includes a battery; a voltage detection circuit; and a low-pass filter provided between the battery and the voltage detection circuit. The low-pass filter includes a capacitor of which one end is connected to a terminal of the battery and the other end is connected to a voltage source outputting a voltage higher than a terminal voltage of the battery.
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Citations
2 Claims
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1. A battery voltage detection device comprising:
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a battery; a voltage detection circuit; and a low-pass filter provided between the battery and the voltage detection circuit, wherein the low-pass filter includes a capacitor of which one end is connected to a terminal of the battery and the other end is connected to a voltage source outputting a voltage higher than a terminal voltage of the battery; wherein the battery is a battery pack in which a plurality of unit batteries are connected in series with each other; wherein the low-pass filter is provided for each of the unit batteries, and wherein each of the other ends of the capacitors is connected to the voltage source via a reference voltage source outputting a voltage obtained by adding a predetermined voltage to a terminal voltage of the unit battery corresponding thereto. - View Dependent Claims (2)
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Specification