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US 9,318,893 B2Granted
Isolated battery management systems and methods thereof
AssigneeGeneral Electric Company
InventorsHuibin Zhu, Hua Zhou
Life of this patent
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Abstract
Systems and methods of the invention relate to circuitry that isolates low power circuitry of a battery management system. One or more circuits can be utilized with a battery management system to provide isolation of low power circuitry from at least one of a high voltage, noise interference from a battery, noise interference from a high voltage, sensor signals, control signals, among others. The circuitry further provides high voltage from a grid to be stepped-down to a voltage level usable by circuitry, port(s), and/or a processor.
Claims20
A system, comprising:
- a first circuit configured to convert a first voltage of a DC bus to a lower second voltage and isolate the second voltage from the first voltage;
- a processor;
- and
- at least one of the following:
- a third circuit operatively connected to an output of the first circuit and configured to convert the second voltage to a lower fourth voltage, isolate the fourth voltage from the second voltage, and condition at least a first monitoring signal related to a battery module to form a first conditioned monitoring signal, wherein at least a signal conditioning portion of the third circuit is powered by the fourth voltage;
- or
- a fourth circuit operatively connected to the output of the first circuit and configured to convert the second voltage to a lower fifth voltage, isolate the fifth voltage from the second voltage, and condition at least a second monitoring signal related to the battery module to form a second conditioned monitoring signal, wherein at least a signal conditioning portion of the fourth circuit is powered by the fifth voltage;
- wherein the processor is configured to receive at least the first conditioned monitoring signal or the second conditioned monitoring signal.
5 more elements
A method, comprising:
- receiving a DC bus voltage from a power grid;
- reducing the DC bus voltage from a first voltage to an isolated second voltage;
- reducing the second voltage to at least one of an isolated third voltage or an isolated fourth voltage;
- reducing the second voltage to an isolated fifth voltage;
- conditioning a monitored battery signal from a battery module to form a conditioned battery signal using the fifth voltage;
- communicating the conditioned battery signal to a processor;
- and
- controlling an operation of the battery module with the processor in response to the conditioned battery signal.
5 more elements
A system, comprising:
- a first circuit configured to convert a first voltage of a DC bus to a lower, isolated second voltage;
- at least one of the following:
- a third circuit operatively connected to an output of the first circuit and configured to convert the second voltage to a lower, isolated fourth voltage and to condition at least a first monitoring signal related to a battery module to form a first conditioned monitoring signal, wherein at least a signal conditioning portion of the third circuit is powered by the fourth voltage;
- or
- a fourth circuit operatively connected to the output of the first circuit and configured to convert the second voltage to a lower, isolated fifth voltage and to condition at least a second monitoring signal related to the battery module to form a second conditioned monitoring signal, wherein at least a signal conditioning portion of the fourth circuit is powered by the fifth voltage;
- and
- means for communicating at least the first conditioned monitoring signal or the second conditioned monitoring signal to a processor of a battery management system.
4 more elements
Dependencies are inferred from the claim text.