Voltage measuring apparatus and battery management system including the same
First Claim
1. A battery management system for managing a battery pack including a plurality of battery cells coupled to each other in series, the battery management system comprising:
- a voltage measuring apparatus including a first node coupled to one of a positive electrode and a negative electrode of a battery cell among battery cells serving as a voltage measuring target and a second node coupled to a remaining one of the positive electrode and the negative electrode, and configured to amplify a voltage difference between the first node and the second node to generate an error voltage, to convert the error voltage to generate a digital signal, and to compensate a polarity of the digital signal; and
a controller configured to receive a correction digital signal having a compensated polarity to control charge and discharge of the battery pack.
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Accused Products
Abstract
Disclosed are a voltage measuring apparatus and a battery management system including the same. The voltage measuring apparatus is connected to a plurality of battery cells connected to each other in series to measure respective voltage of the battery cells. The voltage measuring apparatus includes a first node coupled to one of an positive electrode and a negative electrode of one of a plurality of battery cells as a voltage measuring target, amplifies a voltage difference between the first node and the second node to generate an error voltage, converts the error voltage into a digital signal, and compensates for a polarity of the digital signal.
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Citations
10 Claims
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1. A battery management system for managing a battery pack including a plurality of battery cells coupled to each other in series, the battery management system comprising:
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a voltage measuring apparatus including a first node coupled to one of a positive electrode and a negative electrode of a battery cell among battery cells serving as a voltage measuring target and a second node coupled to a remaining one of the positive electrode and the negative electrode, and configured to amplify a voltage difference between the first node and the second node to generate an error voltage, to convert the error voltage to generate a digital signal, and to compensate a polarity of the digital signal; and a controller configured to receive a correction digital signal having a compensated polarity to control charge and discharge of the battery pack. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification