BATTERY SYSTEM MONITORING APPARATUS
First Claim
1. A battery system monitoring apparatus for monitoring and controlling a battery system, the battery system including a plurality of cell groups, each cell group including a plurality of single battery cells connected in series with each other, the battery system monitoring apparatus comprising:
- a plurality of battery monitoring circuits provided for the respective cell groups, each battery monitoring circuit including a cell voltage measurement module that is connected with two electrodes of respective single battery cells of a corresponding cell group via voltage detection lines and that measures a cell voltage of each of the single battery cells at each of predetermined timings; and
a filter circuit connected with the voltage detection lines, the filter circuit including resistors and capacitors, whereinthe cell voltage measurement module extends intervals at which the cell voltage is to be measured when a stored charge amount in the capacitor in the filter circuit changes.
2 Assignments
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Accused Products
Abstract
An object is to achieve management control of an assembled battery using an accurate measured value of a cell voltage. A battery system monitoring apparatus 10 that monitors and controls a battery system includes battery monitoring circuits 100 provided for respective cell groups 120. Each of the battery monitoring circuits 100 includes a cell voltage measurement module 6 that is connected with two electrodes of respective single battery cells 110 of a corresponding cell group 120 via voltage detection lines 2 and that measures a cell voltage of each of the single battery cells 110 at each of predetermined timings. An RC filter 4 is connected with the voltage detection lines 2. The RC filter 4 includes resistors and capacitors. The cell voltage measurement module 6 extends intervals at which the cell voltage is to be measured when a stored charge amount in the capacitor in the RC filter 4 changes.
7 Citations
7 Claims
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1. A battery system monitoring apparatus for monitoring and controlling a battery system, the battery system including a plurality of cell groups, each cell group including a plurality of single battery cells connected in series with each other, the battery system monitoring apparatus comprising:
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a plurality of battery monitoring circuits provided for the respective cell groups, each battery monitoring circuit including a cell voltage measurement module that is connected with two electrodes of respective single battery cells of a corresponding cell group via voltage detection lines and that measures a cell voltage of each of the single battery cells at each of predetermined timings; and a filter circuit connected with the voltage detection lines, the filter circuit including resistors and capacitors, wherein the cell voltage measurement module extends intervals at which the cell voltage is to be measured when a stored charge amount in the capacitor in the filter circuit changes. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification