Smart battery with maintenance and testing functions
First Claim
1. A computer-implemented method for self monitoring a rechargeable battery'"'"'s ability to reliably deliver charge to a host device, the method comprising:
- calculating a state of charge (SOC) that quantifies the ability of the rechargeable battery to deliver charge to a host device, the SOC being dynamically calculated by a monitoring circuit using a discharging SOC equation as charge is drawn from the battery and a charging SOC equation as charge is supplied to the battery;
charging the rechargeable battery with a battery maintenance and testing device, the battery maintenance and testing device sending an end of charge message through a communication interface coupled to the monitoring circuit when the battery maintenance and testing device detects that the rechargeable battery has stopped accepting charge; and
adjusting the SOC to a full charge capacity value if the SOC exceeds the full charge capacity value when the end of charge message is received by the rechargeable battery from the battery maintenance and testing system.
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Accused Products
Abstract
A smart battery that self-monitors and maintains information about itself that includes its state of charge, its need for maintenance, and for conditions that indicate that it has reached the end of its useful life and should be discarded. The information maintained by the battery is then either displayed on an on-board display or is communicated to another device on a communication bus. The state of charge quantifies the smart battery'"'"'s ability to reliably deliver charge to a host device and is dynamically adjusted over the lifetime of the smart battery. The state of charge may not exceed a full charge capacity value maintained by the smart battery and initially set to an estimated value. This full charge capacity value is dynamically adjusted throughout the life of the smart battery using information accumulated and maintained by the smart battery that indicates the smart battery'"'"'s actual performance during use and by using messages received from a battery maintenance and testing system. The smart battery also accumulates and maintains information that indicates that the smart battery requires maintenance. A battery maintenance and testing system can read this need for maintenance from the smart battery and take the steps necessary to automatically maintain the smart battery. Conditions that indicate that the battery is defective or has exceeded its useful life are also maintained by the smart battery and communicated through the on-board display or to another devices over a communication bus. The battery is specially configured for easy assembly.
761 Citations
46 Claims
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1. A computer-implemented method for self monitoring a rechargeable battery'"'"'s ability to reliably deliver charge to a host device, the method comprising:
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calculating a state of charge (SOC) that quantifies the ability of the rechargeable battery to deliver charge to a host device, the SOC being dynamically calculated by a monitoring circuit using a discharging SOC equation as charge is drawn from the battery and a charging SOC equation as charge is supplied to the battery; charging the rechargeable battery with a battery maintenance and testing device, the battery maintenance and testing device sending an end of charge message through a communication interface coupled to the monitoring circuit when the battery maintenance and testing device detects that the rechargeable battery has stopped accepting charge; and adjusting the SOC to a full charge capacity value if the SOC exceeds the full charge capacity value when the end of charge message is received by the rechargeable battery from the battery maintenance and testing system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A smart battery apparatus, comprising:
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a smart battery case having an upper portion and a lower portion that define a case interior, the lower portion having an bottom exterior portion and a forward edge; a plurality of electrically conductive rods each having an interface connector positioned along a longitudinal axis, the longitudinal axis being parallel with the forward edge, each interface connector providing an electrically conductive surface at a fixed position on the bottom exterior portion, each electrically conductive rod having a rigid intermediate portion that ascends through the case interior to a circuit board having a monitoring circuit, the electrically conductive rod having a top portion that is connected to the circuit board in a manner that conducts an electrical signal that is coupled to the electrically conductive rod to the monitoring circuit, the electrically conductive rods fixing the position of the circuit board directly below a user interface and display area; and a monitoring circuit on the circuit board for monitoring a State of Charge (SOC) of the smart battery and displaying the SOC by way of the user interface and display area. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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Specification