Abstract: Methods and systems for charging a battery utilizing a negotiable power supply in which the power supply and a component of a charge circuit negotiate a level of power are disclosed. A charge circuit may include a controller to communicate with the negotiable power supply to request a power signal comprising a voltage and a maximum current, which may then be provided by the negotiable power supply. A voltage value and/or maximum current value of the negotiated power signal may be provided as parameters to a model of one or more components of a charge signal shaping circuit. The circuit model may utilize the provided power parameters when modeling one or more charge circuit components to generate an accurate model of the charge circuit and used to control a charge circuit to provide power to recharge the battery that limits a power level that may damage the battery during charging.

Abstract: A system for charging a battery comprising a first switch operably coupled with a power supply. An inductive element, which may be a part of filter, is in operable communication with the switch. The system includes a processor in communication with the switch and in communication with a model of the inductive element. The processor is configured to execute instructions to control the switch to generate a sequence of pulses at the first inductive element to produce a shaped charge waveform responsive to running the model to generate the shaped charge waveform.

Abstract: A system for heating a battery comprising a first switch operably coupled with a power supply. An inductive element, which may be a part of filter, is in operable communication with the first switch and a second switch. The system includes a processor in communication with the switches to execute instructions to control the switches to controllably source current to and from the battery, wherein the sources current to and from the battery may be of arbitrary shapes tuned to harmonics optimized for heat generation.

Abstract: Systems, circuits, and methods are disclosed herein for charging (recharging) one or more batteries of an electric vehicle through an on-board charge shaping (or tuning) circuit. The charge shaping circuit may alter the charge signal received from a charging station and/or a regenerative charge signal from the vehicle motor based on one or more charge conditions at the battery. The shaped charge signal as controlled by the charge shaping circuit may improve one or more aspects of charging of the vehicle battery. The charge shaping circuit and/or a motor controller/inverter of the electric vehicle may include circuitry that is controllable to generate a shaped power signal in a similar manner as above, with or without the charge shaping circuit discussed above. In some implementations, one or more heat transfer systems may be included to transfer heat generated from the battery charging system to the battery.

Abstract: Disclosed herein is a rack ear for mounting equipment in an equipment rack. The rack ear can include a member that extends outward from a computing device, when the rack ear is coupled to the computing device, to an end of the member. The member can include an elongate opening that extends through the member and defines an upper lobe and a lower lobe. The elongate opening can extend through the end of the member to define a slot opening. The elongate opening can be symmetrical about a plane through the horizontal midline of the member. The member can define a height that corresponds to a 1U, 2U, 3U, or 4U dimension of the computing device.

Abstract: Systems, circuits, and methods are disclosed herein for charging (recharging) one or more batteries of an electric vehicle through an on-board charge shaping (or tuning) circuit. The charge shaping circuit may alter the charge signal received from a charging station and/or a regenerative charge signal from the vehicle motor based on one or more charge conditions at the battery. The charge shaping circuit and/or a motor controller/inverter of the electric vehicle may include circuitry that is controllable to generate a shaped power signal in a similar manner as above, with or without the charge shaping circuit discussed above. In some implementations, one or more heat transfer systems may be included to transfer heat generated from the battery charging system to the battery.

Abstract: Systems, circuits, and methods are disclosed for charging battery cells by generating a shaped charge signal that is shaped as controlled through a signal shaping generator. In one example, one or both of a pair of transistors may be controlled with a pulse-width modulation (PWM) signal with a duty cycle. The PWM signal is applied to the gates of the respective transistors to produce a sequence of pulses, which when applied to an inductor, produces a shaped waveform that may be applied to the battery. In an aspect, the duty cycle of the PWM controlling the operation of the transistors correlates to a charge current applied to the battery, such that a higher duty cycle of the PWM control signal results in a higher current applied to charge the battery. The signal shaping generator utilizes a target shape to begin shaping a charge signal for the battery.

Abstract: Disclosed herein is a rack ear for mounting equipment in an equipment rack. The rack ear can include a member that extends outward from a computing device, when the rack ear is coupled to the computing device, to an end of the member. The member can include an elongate opening that extends through the member and defines an upper lobe and a lower lobe. The elongate opening can extend through the end of the member to define a slot opening. The elongate opening can be symmetrical about a plane through the horizontal midline of the member. The member can define a height that corresponds to a 1U, 2U, 3U, or 4U dimension of the computing device.

Abstract: An optimized charge signal shaping circuit is presented such that components of the charge signal circuit arrangement may be operable with fewer components and/or processing overhead than other approaches, thereby reducing costs, using less printed circuit board (PCB) real estate, and being computationally less complicated, among other advantages. In one particular implementation, portions of a power supply circuit may be combined with portions of a charge signal shaping circuit to leverage common functions and component characteristics of the portions, including a direct current/direct current (DC/DC) converter circuit. A reduced charge circuit may take advantage of each component including similar functions and/or circuit devices to reduce the overall number of components used in the charge circuit to reduce the overall footprint, conserve charging energy lost to the redundant components, and reduce the overall cost.

Abstract: A system for wirelessly charging a battery comprising a switch operably coupled with a power supply. An inductor element, which may be part of a transformer element, which may be a part of filter, is in operable communication with the switch. The transformer is formed when two inductive elements are proximately positioned and provide a wireless charging interface. The system includes a processor in communication with the switch and in communication with a model of the inductor, which may include the transformer. The processor is configured to execute instructions to control the switch to generate a sequence of pulses at the inductor to produce a shaped charge waveform responsive to running the model to generate the shaped charge waveform.

Abstract: Systems, circuits, and methods are disclosed herein for charging (recharging) one or more batteries of an electric vehicle through an on-board charge shaping (or tuning) circuit. The charge shaping circuit may alter the charge signal received from a charging station and/or a regenerative charge signal from the vehicle motor based on one or more charge conditions at the battery. The shaped charge signal as controlled by the charge shaping circuit may improve one or more aspects of charging of the vehicle battery. The charge shaping circuit and/or a motor controller/inverter of the electric vehicle may include circuitry that is controllable to generate a shaped power signal in a similar manner as above, with or without the charge shaping circuit discussed above. In some implementations, one or more heat transfer systems may be included to transfer heat generated from the battery charging system to the battery.

Abstract: Methods and systems for charging a battery utilizing a negotiable power supply in which the power supply and a component of a charge circuit negotiate a level of power are disclosed. A charge circuit may include a controller to communicate with the negotiable power supply to request a power signal comprising a voltage and a maximum current, which may then be provided by the negotiable power supply. A voltage value and/or maximum current value of the negotiated power signal may be provided as parameters to a model of one or more components of a charge signal shaping circuit. The circuit model may utilize the provided power parameters when modeling one or more charge circuit components to generate an accurate model of the charge circuit and used to control a charge circuit to provide power to recharge the battery that limits a power level that may damage the battery during charging.

Abstract: A system for heating a battery comprising a first switch operably coupled with a power supply. An inductive element, which may be a part of filter, is in operable communication with the first switch and a second switch. The system includes a processor in communication with the switches to execute instructions to control the switches to controllably source current to and from the battery, wherein the sources current to and from the battery may be of arbitrary shapes tuned to harmonics optimized for heat generation.

Abstract: A system for charging a battery comprising a first switch operably coupled with a power supply. An inductive element, which may be a part of filter, is in operable communication with the switch. The system includes a processor in communication with the switch and in communication with a model of the inductive element. The processor is configured to execute instructions to control the switch to generate a sequence of pulses at the first inductive element to produce a shaped charge waveform responsive to running the model to generate the shaped charge waveform.