Abstract:
A 12 volt automotive battery system includes a first battery directly coupled to an electrical system, in which the first battery includes a first battery chemistry, and a second battery coupled in parallel with the first battery and directly coupled to the electrical system, in which the second battery includes a second battery chemistry with a higher coulombic efficiency than the first battery chemistry. The first battery and the second battery are non-voltage matched such that a voltage range of the second battery is higher than a voltage range of the first battery. The first battery steers power generated during regenerative braking to the second battery using internal resistance of the first battery to enable the second battery to capture a majority of the power generated during regenerative braking, and the second battery provides power to the electrical system due to the higher voltage range of the second battery when the second battery has a positive state of charge.
Abstract:
An electronic device may include a network interface that may enable the electronic device to wirelessly couple the electronic device to other electronic devices. The electronic device may also include a processor that may determine at least one data path to the other electronic devices using a Routing Information Protocol - Next Generation (RIPng) routing mechanism. After identifying at least one data path to the other electronic devices, the processor may determine whether the identified data path(s) is secure using a Datagram Transport Layer Security (DTLS) protocol. If the identified data path(s) is determined to be secure, the processor may send Internet Protocol version 6 (IPv6) data packets to the other electronic devices via the secure data path(s).
Abstract:
A battery 12 includes a battery monitoring system 22 for performing a battery self test. The battery monitoring system 22 is integrated into the battery 12 and configured to monitor a first health of the battery 12. The battery monitoring system 22 is configured to receive an input signal from a wired interface or a wireless interface. The input signal is configured to instruct the battery monitoring system 22 to provide feedback regarding the first health of the battery 12 and/or a second health of the battery monitoring system 22. The wired interface consists of a positive terminal 16 and a negative terminal 18 of the battery 12.
Abstract:
A computer-implemented method 700 for predicting a value of a cell parameter is provided, wherein the cell is one of a plurality of cells of a battery pack. The method includes determining which other different conditions of the cell and which similar and/or different conditions of any other cell of the plurality of cells correlate with the cell condition 710, determining values of one or more parameters from the same cell or any other cell of the plurality of cells that correspond to the determined conditions that correlate with the cell condition 712, and predicting the value of the cell parameter based on the determined values 716.
Abstract:
According to various embodiments, a method may include supplying a gas to an upstream side of a core holder 96 containing a core sample 94, accumulating permeated gas that has flowed through the core sample 94 in a cavity 110 coupled to a downstream side of the core holder 96, measuring an elapsed time during which the permeated gas accumulates in the cavity 110 using a timer 124, measuring a pressure of the permeated gas using a pressure transducer 120 coupled to the cavity 110, and determining a gas permeability of the core sample 94 based at least in part on the pressure of the permeated gas and the elapsed time.
Abstract:
The extensional viscosity of a styrenic resin is enhanced by increasing the Z+1 average molecular weight (Mz+1) of the resin. In one embodiment, an enhanced extensional viscosity resin is provided that has an Mz+1 molecular weight of at least approximately 745,000 and an extensional viscosity having a minimum value of approximately 360,000 Pascal-seconds (Pa-sec).
Abstract:
Systems are disclosed for battery modules/systems with cooling systems. In accordance with disclosed embodiments, the cooling system may be disposed against an external surface of a housing of the battery system. The cooling system (30) may utilize air as a coolant to remove heat generated by cells (32) within the battery module (60), to prevent the cells from aging prematurely. Embodiments of the cooling system may include manifolds, channels (48), fins (50), or a combination thereof, which may route the cooling air along the surface of the battery module housing (34). Such features may create an isothermal temperature distribution within the battery system.
Abstract:
Systems are disclosed for battery modules having a plurality of electrochemical cells and cooling systems. According to one embodiment, a battery system includes a plurality of battery modules. Each battery module includes a plurality of electrochemical cells in thermal contact with a heat sink. The heat sink may utilize a plurality of fins and a fluid (e.g., air) to cool or heat the electrochemical cells. The electrochemical cells each have a positive terminal blade and a negative terminal blade that function as external terminals for the cell. The negative terminal blade is electrically isolated from the cover of the cell and is configured to be coupled to an internal negative terminal of the cell.
Abstract:
Systems and methods for pre-charging a bus capacitance in vehicles 10 that receive at least a portion of their motive power from electricity generated from a battery 12 are provided. By way of example, an embodiment includes a vehicle control unit (VCU) 16 that receives battery pack data from a battery management unit (BMU) 14 of each of a plurality of battery packs 12 and determines, based on the battery pack data, which battery packs 12 may be used to pre-charge the bus capacitance in parallel. The VCU 16 issues commands to each of the BMUs 14 to connect pre-charge circuits between each of the plurality of battery packs 12 and the bus capacitance and receives status information from each of the BMUs 14 to determine whether or not the bus capacitance was successfully pre-charged by the battery packs 12.
Abstract:
Systems, methods, and devices are provided for detecting short circuits in a backlight assembly without a resistor-based current sensor. For example, an electronic display according to the present disclosure may include a display panel and a backlight assembly to illuminate the display panel. The backlight assembly may drive a backlight element to illuminate the display panel and may include backlight short-circuit detection circuitry. The backlight short-circuit protection circuitry may detect a feedback voltage associated with the backlight element and determine when a short circuit has occurred based at least in part on the feedback voltage.