Battery Controller and Voltage Abnormality Detection Method
First Claim
1. A battery controller for controlling an assembled battery configured by connecting a plurality of battery groups each including a plurality of battery cells, comprising:
- a plurality of voltage measuring units that are provided respectively for the plurality of battery groups each to measure a voltage of each of the battery cells included in a corresponding battery group;
a minimum value detecting unit that detects a minimum value of the battery cells for each of the plurality of battery groups based upon the voltage of each of the battery cells measured by a corresponding voltage measuring unit;
a reference value setting unit that sets a reference value used to determine an abnormal voltage drop for each of the plurality of battery groups based upon the voltage of each of the battery cells measured by the corresponding voltage measuring unit; and
an abnormality determining unit that makes a determination that an abnormal voltage drop is present, if a difference between the reference value and the minimum value exceeds a predetermined value, for each of the plurality of battery groups.
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Abstract
A battery controller for controlling an assembled battery configured by connecting battery groups each including battery cells, includes: voltage measuring units that are provided respectively for the battery groups each to measure a voltage of each of the battery cells included in a corresponding battery group; a minimum value detecting unit that detects a minimum value of the battery cells for each of the battery groups based upon the measured voltage of each of the battery cells; a reference value setting unit that sets a reference value used to determine an abnormal voltage drop for each of the battery groups based upon the measured voltage of each of the battery cells; and an abnormality determining unit that makes a determination that an abnormal voltage drop is present, if a difference between the reference value and the minimum value exceeds a predetermined value, for each of the battery groups.
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Citations
14 Claims
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1. A battery controller for controlling an assembled battery configured by connecting a plurality of battery groups each including a plurality of battery cells, comprising:
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a plurality of voltage measuring units that are provided respectively for the plurality of battery groups each to measure a voltage of each of the battery cells included in a corresponding battery group; a minimum value detecting unit that detects a minimum value of the battery cells for each of the plurality of battery groups based upon the voltage of each of the battery cells measured by a corresponding voltage measuring unit; a reference value setting unit that sets a reference value used to determine an abnormal voltage drop for each of the plurality of battery groups based upon the voltage of each of the battery cells measured by the corresponding voltage measuring unit; and an abnormality determining unit that makes a determination that an abnormal voltage drop is present, if a difference between the reference value and the minimum value exceeds a predetermined value, for each of the plurality of battery groups. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for detecting an abnormal voltage in an assembled battery configured by connecting a plurality of battery groups each including a plurality of battery cells, comprising:
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a voltage measuring step of measuring a voltage of each of the battery cells included in each of the plurality of battery groups; a minimum value detecting step of detecting a minimum value of the battery cells for each of the plurality of battery groups based upon the voltage of each of the battery cells measured in the voltage measuring step; a reference value setting step of setting a reference value used to determine an abnormal voltage drop for each of the plurality of battery groups based upon the voltage of each of the battery cells measured in the voltage measuring step; and an abnormality determining step of making a determination that an abnormal voltage drop is present, if a difference between the reference value and the minimum value exceeds a predetermined value, for each of the plurality of battery groups. - View Dependent Claims (14)
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Specification