Systems and methods for connecting battery strings to a DC bus
First Claim
1. A method for connecting a plurality of battery strings to a direct-current (DC) bus, the method comprising:
- sorting the plurality of battery strings in an order based on respective output voltage values of the battery strings, the sorted plurality of battery strings including, in the order, at least a first battery string and a second battery string;
connecting the first battery string to a pre-charge circuit;
pre-charging the DC bus using the first battery string and the pre-charge circuit;
connecting the first battery string to the DC bus; and
connecting the second battery string to the DC bus;
wherein pre-charging the DC bus further comprises;
decreasing a first impedance of the pre-charge circuit; and
increasing a second impedance of a discharge circuit connected to the DC bus.
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Abstract
A method is disclosed for connecting a plurality of battery strings to a direct-current (DC) bus. The method may include sorting the plurality of battery strings in an order based on respective output voltage values of the battery strings. The sorted plurality of battery strings may include, in the order, at least a first battery string and a second battery string. The method may also include connecting the first battery string to a pre-charge circuit. The method may further include pre-charging the DC bus using the first battery string and the pre-charge circuit. The method may further include connecting the first battery string to the DC bus. The method may further include connecting the second battery string to the DC bus.
5 Citations
18 Claims
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1. A method for connecting a plurality of battery strings to a direct-current (DC) bus, the method comprising:
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sorting the plurality of battery strings in an order based on respective output voltage values of the battery strings, the sorted plurality of battery strings including, in the order, at least a first battery string and a second battery string; connecting the first battery string to a pre-charge circuit; pre-charging the DC bus using the first battery string and the pre-charge circuit; connecting the first battery string to the DC bus; and
connecting the second battery string to the DC bus;wherein pre-charging the DC bus further comprises;
decreasing a first impedance of the pre-charge circuit; and
increasing a second impedance of a discharge circuit connected to the DC bus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for connecting a plurality of battery strings to a DC bus, the system comprising:
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one or more pre-charge circuits; and a controller configured to; sort the plurality of battery strings in an order based on respective output voltage values of the battery strings, the sorted plurality of battery strings including, in the order, at least a first battery string and a second battery string; connect the first battery string to a pre-charge circuit; pre-charge the DC bus using the first battery string and the pre-charge circuit; connect the first battery string to the DC bus; connect the second battery string to the DC bus; decrease a first impedance of the pre-charge circuit; and increase a second impedance of a discharge circuit connected to the DC bus. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method for connecting battery strings to a direct-current (DC) bus, the method comprising:
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sorting a plurality of battery strings in an order according to a performance parameter of the battery strings, the plurality of battery strings including, in the order, a first battery string and a second battery string; connecting the first battery string to a pre-charge circuit; pre-charging the DC bus using the first battery string and the pre-charge circuit; connecting the first battery string to the DC bus; connecting the second battery string to the DC bus; decreasing a first impedance of the pre-charge circuit; and increasing a second impedance of a discharge circuit connected to the DC bus. - View Dependent Claims (18)
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Specification