Capacity adjustment apparatus for battery pack and capacity adjustment method for battery pack
First Claim
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1. A battery pack capacity adjustment apparatus for a battery pack constituted by connecting in serious a plurality of cells, comprising:
- capacity adjustment circuits each provided in correspondence to one of the plurality of cells to execute a capacity adjustment by discharging the corresponding cell if a voltage at the corresponding cell exceeds a predetermined bypass engaging voltage;
a power generation device that generates power used to charge the battery pack;
a capacity adjustment decision-making device that makes a decision as to whether or not capacity adjustment needs to be executed for the battery pack;
a target power generation calculation device that calculates target power to be generated based upon the bypass engaging voltage; and
a power generation control device that issues a power generation command for the power generation device so as to generate the target power calculated by the target power generation calculation device if the capacity adjustment decision-making device determines that the capacity adjustment is necessary.
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Abstract
A control unit calculates target power to be generated based upon a bypass engaging voltage used as a reference voltage at which a capacity adjustment circuit executes a capacity adjustment, and issues a power generation command for an inverter so as to generate the target power if it is decided that the capacities of the individual cells need to be adjusted.
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Citations
8 Claims
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1. A battery pack capacity adjustment apparatus for a battery pack constituted by connecting in serious a plurality of cells, comprising:
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capacity adjustment circuits each provided in correspondence to one of the plurality of cells to execute a capacity adjustment by discharging the corresponding cell if a voltage at the corresponding cell exceeds a predetermined bypass engaging voltage;
a power generation device that generates power used to charge the battery pack;
a capacity adjustment decision-making device that makes a decision as to whether or not capacity adjustment needs to be executed for the battery pack;
a target power generation calculation device that calculates target power to be generated based upon the bypass engaging voltage; and
a power generation control device that issues a power generation command for the power generation device so as to generate the target power calculated by the target power generation calculation device if the capacity adjustment decision-making device determines that the capacity adjustment is necessary. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A battery pack capacity adjustment apparatus for a battery pack constituted by connecting in serious a plurality of cells, comprising:
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capacity adjustment means, each provided in correspondence to one of the plurality of cells, for executing a capacity adjustment by discharging the corresponding cell if a voltage at the corresponding cell exceeds a predetermined bypass engaging voltage;
a power generation means for generating power used to charge the battery pack;
a capacity adjustment decision-making means for making a decision as to whether or not capacity adjustment needs to be executed for the battery pack;
a target power generation calculation means for calculating target power to be generated based upon the bypass engaging voltage; and
a power generation control means for issuing a power generation command for the power generation means so as to generate the target power calculated by the target power generation calculation means if the capacity adjustment decision-making means determines that the capacity adjustment is necessary.
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8. A battery pack capacity adjustment method for adjusting capacities of a plurality of cells constituting a battery pack by using capacity adjustment circuits each provided in correspondence to one of the plurality of cells to discharge the corresponding cell if a voltage at the corresponding cell exceeds a predetermined bypass engaging voltage, comprising steps for:
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making a decision as to whether or not a capacity adjustment needs to be executed for the battery pack;
calculating target power to be generated based upon the bypass engaging voltage; and
issuing a power generation command for a power generation device that generates power used to charge the battery pack so as to generate the target power if the capacity adjustment for the battery pack is determined to be necessary.
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Specification