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 is disclosed for determining complex impedance characteristics of one or more battery cells based on the charge signal applied, or to be applied, to the battery cell. Implementations may include measuring the impedance of a battery cell to, in some instances, determine a frequency component or harmonic that defines, at least a portion, of a waveform shape for charging the battery cell. In one implementation, the impedance at the battery cell may be measured or estimated from a discrete charge period being applied to the battery cell or from multiple discrete charge periods applied to the battery cell. The measured differences between the amplitude and time components of the voltage and current waveforms may be used to determine or estimate the magnitude, phase shift, real, and/or imaginary values of the impedance at the battery cell.

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 and methods that charge a battery using a signal with at least one harmonically tuned aspect based on impedance of the battery with a frequency or harmonic component. The system may further involve a power converter that may act in concert with charging to power a load. In some instances, an output signal is generated that is interleaved with the charge signal. Further, the output signal may be tuned based on output impedance to the discharge signal.

Abstract: Aspects of the present disclosure involve charging or discharging an electrochemical device such as a battery. The system generates a waveform, such as a charge signal, to tune harmonic attributes of the waveform based on the impedance of the battery to a harmonic or harmonics of the waveform. The system may enhance (e.g., add or increase magnitude) or suppress (e.g., delete or reduce magnitude) harmonics of the waveform. Such a harmonically tuned waveform may optimize energy transfer to or from the battery to achieve various possible goals including charging speed, enhancing battery charge capacity and/or enhancing battery cycle life.

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: The disclosure provides a method comprising inducing a first current between a source of a countercharge and a first electrode, the first current being through an electrolyte. A second current is induced across the first electrode, the second current being transverse to the first current, and the second current inducing a relativistic charge across the first electrode.

Abstract: A method, and associated batteries and battery charging units, that involve inducing electric and/or magnetic fields (field-induced current) across an electrode of a electrochemical cell, such as an anode of a battery. The field and current across the electrode may be referred to herein as a transverse current as this current is typically transverse to the ionic charge current that may be applied when charging a battery. The field and current may be induced from connecting AC energy, e.g., AC current, across the electrode or at a discrete point or points of the electrode. The induced field and current may suppress dendrite growth, experienced in conventional batteries without AC energy, among other advantages.

Abstract: A method, and associated batteries and battery charging units, that involve inducing electric and/or magnetic fields (field-induced current) across an electrode of a electrochemical cell, such as an anode of a battery. The field and current across the electrode may be referred to herein as a transverse current as this current is typically transverse to the ionic charge current that may be applied when charging a battery. The field and current may be induced from connecting AC energy, e.g., AC current, across the electrode or at a discrete point or points of the electrode. The induced field and current may suppress dendrite growth, experienced in conventional batteries without AC energy, among other advantages.