Adaptive battery charging
First Claim
1. A method for use in a battery charging system, the method comprising:
- providing power from a power source to a load, the provided power having an input voltage;
providing current from the power source to a battery at a first level;
monitoring a voltage associated with the input voltage to determine if the input voltage drops below a threshold voltage; and
reducing the current supplied from the power source to the battery in response to detecting that the input voltage dropped below the threshold voltage such that the current supplied to the battery is provided at a second level that is below the first level.
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Accused Products
Abstract
A system includes an input configured to connect to a power source providing an input voltage, an output configured to connect to a load and to transfer power from the power source to the load, a battery selectively coupled to the input to receive current from the power source, a detector configured to indicate whether the input voltage drops more than a threshold amount, and a processor configured to regulate the selective coupling of the battery to the input to regulate a charging current supplied to the battery, the processor configured to regulate the selective coupling such that if a first charge current induces a drop in the input voltage beyond the threshold amount, then the processor will change the charging current to a second charge current that is lower than the first charge current.
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Citations
31 Claims
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1. A method for use in a battery charging system, the method comprising:
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providing power from a power source to a load, the provided power having an input voltage; providing current from the power source to a battery at a first level; monitoring a voltage associated with the input voltage to determine if the input voltage drops below a threshold voltage; and reducing the current supplied from the power source to the battery in response to detecting that the input voltage dropped below the threshold voltage such that the current supplied to the battery is provided at a second level that is below the first level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 21, 22)
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9. A system comprising:
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an input configured to connect to a power source providing an input voltage; an output configured to connect to a load and to transfer power from the power source to the load; a battery; a connection mechanism, coupled to the input and the battery, configured to selectively couple the input to the battery to selectively provide current from the power source to the battery; and a processor, coupled to the connection mechanism, configured to regulate the selective coupling of the battery to the input to regulate a charging current supplied to the battery such that when the charging current is at a first level and the input voltage drops below a threshold voltage level, the processor will change the charging current to a second level that is lower than the first level. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. An uninterruptible power supply (UPS) configured to couple to a power source that provides an input voltage, and to a load, the UPS comprising:
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an input configured to couple to the power source; an output configured to couple to the load; and a battery charger coupled to the input to receive the input voltage and comprising; a battery; a monitor connected and capable of monitoring a voltage associated with the input voltage and capable of determining that the input voltage drops below a threshold voltage; coupling means for selectively providing power from the power source to the load and a range of charge current amounts from the power source to the battery; and means for directing the coupling means to reduce the current supplied from the power source to the battery in response to the monitor detecting that the input voltage drops below the threshold voltage such that the current supplied to the battery is provided at a reduced level below a first level and greater than an initial level. - View Dependent Claims (19, 20)
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23. An adaptive battery charging system comprising:
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a system input configured to couple to an external power source providing an input voltage; a system output configured to couple the input voltage to a load; a battery; a connection mechanism, coupled to the system input and the battery, configured to provide charging current to the battery from the system input; and means, coupled to the connection mechanism, for controlling the connection mechanism to increase an amount of the charging current provided to the battery as a function of input voltage while ensuring that a sufficient power is provided from the power supply to the load. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31)
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Specification