Battery management system
First Claim
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1. A device, comprising:
- a control entity configured to monitor an operation parameter of a plurality of battery cells of a battery that is coupled along a power line between endpoints of the power line, the plurality of battery cells being electrically connected in series along the power line between terminals of the battery;
an interface configured to be coupled with the power line and to transmit control data on the power line via modulation of a power line signal by a switch connected in parallel with the plurality of battery cells and operating between an open state, in which a voltage according to a sum of open circuit voltages of the plurality of battery cells is developed between the endpoints of the power line and a closed state, in which the voltage according to the sum of open circuit voltages of the plurality of battery cells is not developed between the endpoints of the power line, wherein the modulation of the power line signal by the switch results in a compensation current that is detectable by a receiver; and
a capacitor configured to be coupled in parallel with the endpoints of the power line and to supplement the compensation current.
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Abstract
A device comprises a control entity configured to monitor an operation parameter of at least one battery cell of a battery. The device further comprises an interface coupled with a power line of the battery and configured to transceive control data via at least one of load modulation or load demodulation of a power line signal of the power line.
17 Citations
21 Claims
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1. A device, comprising:
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a control entity configured to monitor an operation parameter of a plurality of battery cells of a battery that is coupled along a power line between endpoints of the power line, the plurality of battery cells being electrically connected in series along the power line between terminals of the battery; an interface configured to be coupled with the power line and to transmit control data on the power line via modulation of a power line signal by a switch connected in parallel with the plurality of battery cells and operating between an open state, in which a voltage according to a sum of open circuit voltages of the plurality of battery cells is developed between the endpoints of the power line and a closed state, in which the voltage according to the sum of open circuit voltages of the plurality of battery cells is not developed between the endpoints of the power line, wherein the modulation of the power line signal by the switch results in a compensation current that is detectable by a receiver; and a capacitor configured to be coupled in parallel with the endpoints of the power line and to supplement the compensation current. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system, comprising:
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a plurality of batteries coupled along a power line in series between endpoints of the power line; a plurality of devices, each one of the plurality of devices being associated with a corresponding one of the plurality of batteries, each device comprising; a control entity configured to monitor an operation parameter of the corresponding one of the plurality of batteries; and an interface configured to be coupled with the power line and to transmit control data on the power line via modulation of a power line signal by a switch connected in parallel with the corresponding one of the plurality of batteries and operating between an open state, in which a voltage of the corresponding one of the plurality of batteries is developed between the endpoints of the power line, and a closed state, in which the voltage of the corresponding one of the plurality of batteries is not developed between the endpoints of the power line, wherein the modulation of the power line signal by the switch results in a compensation current that is detectable by a receiver, and a capacitor coupled in parallel with the endpoints of the power line and configured to supplement the compensation current in the power line. - View Dependent Claims (11, 12, 13)
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14. A system, comprising:
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a plurality of battery cells of a battery coupled along a power line in series between endpoints of the power line; a plurality of devices, each one of the plurality of devices being associated with a corresponding one of the plurality of battery cells, each device comprising; a control entity configured to monitor an operation parameter of the corresponding one of the plurality of battery cells; and an interface configured to be coupled with the power line and to transmit control data on the power line via modulation of a power line signal by a switch connected in parallel with the corresponding one of the plurality of battery cells and operating between an open state, in which a voltage of the corresponding one of the plurality of battery cells is developed between the endpoints of the power line, and a closed state, in which the voltage of the corresponding one of the plurality of battery cells is not developed between the endpoints of the power line, wherein the modulation of the power line signal by the switch results in a compensation current that is detectable by a receiver, and a capacitor coupled in parallel with the endpoints of the power line and configured to supplement the compensation current in the power line. - View Dependent Claims (15, 16, 17)
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18. A method, comprising:
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monitoring an operation parameter of a plurality of battery cells of a battery that is coupled along a power line between endpoints of the power line, the plurality of battery cells being electrically connected in series along the power line between terminals of the battery; and transmitting control data on the power line via modulation of a power line signal by a switch connected in parallel with the plurality of battery cells and operating between an open state, in which a voltage according to a sum of open circuit voltages of the plurality of battery cells is developed between the endpoints of the power line, and a closed state, in which the voltage according to the sum of open circuit voltages of the plurality of battery cells is not developed between the endpoints of the power line, wherein the modulation of the switch results in a compensation current that is detectable by a receiver, and wherein a capacitor coupled in parallel with the endpoints of the power line is configured to supplement the compensation current. - View Dependent Claims (19, 20, 21)
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Specification