Abstract: Provided is a voltage detection line including conductive wire and insulating film covering conductive wire, and detecting voltage of a battery in order to suppress reconduction of a disconnected voltage detection line. Conductive wire includes low-resistance part having a predetermined electrical resistance value, and high-resistance part having a higher electrical resistance value than an electrical resistance value of low-resistance part and fusing when an overcurrent flows through conductive wire. Insulating film includes high-strength part that covers low-resistance part and has a predetermined strength, and low-strength part that covers high-resistance part and has a strength lower than a strength of high-strength part.

Abstract: A method for managing a battery includes obtaining a first plurality of battery parameters with respect to a first charging or discharging cycle of the battery; obtaining a second plurality of battery parameters with respect to a second charging or discharging cycle of the battery; determining a relative entropy by comparing the first plurality of battery parameters measured during the first charging or discharging cycle and the second plurality of battery parameters measured during the second charging or discharging cycle; and estimating a relative entropy value to predict a number of cycles after which a battery capacity is predicted to drop.

Abstract: An apparatus and method for diagnosing a state of a battery in various aspects based on a differential profile respectively obtained in a situation where the battery is charged and discharged. Since the state of the battery is diagnosed by considering both the first differential profile related to the charging of the battery and the second differential profile related to the discharging of the battery, there is an advantage of diagnosing the state of the battery more accurately.

Abstract: An estimation device includes: a deriving unit (31) that derives a derivation history based on a current and a voltage of a lead-acid battery and a temperature of the lead-acid battery; a specifying unit 31 that specifies at least two degrees of a first degree of softening of a positive electrode material, a second degree of corrosion of a positive electrode grid, a third degree of negative electrode sulfation, and a fourth degree of shrinkage of a negative electrode material based on the derived derivation history and at least two relationships selected from the group consisting of: a first relationship between a first history based on the current, the voltage, and the temperature of the lead-acid battery, and the first degree; a second relationship between a second history and the second degree; a third relationship between a third history and the third degree; and a fourth relationship between a fourth history and the fourth degree; and an estimating unit (31) that estimates a degree of deterioration of th

Abstract: A method can comprise: scanning a tip of an airfoil of a bladed rotor, the tip including a coating disposed thereon, the coating comprising a metal plating and a plurality of protrusions, each protrusion in the plurality of protrusions extending from the metal plating; comparing a coating parameter of the coating to a coating parameter threshold based on scanner data from the scanning; and determining whether the coating maintains sufficient coverage of the tip of the airfoil based on the comparing.

Abstract: Methods for determining the capacity of a battery cell, including a lithium-ion battery cell, and a plurality of battery cells include measuring surface temperature and voltage of the battery cell(s). Then, a constant-current discharge cycle is conducted. Subsequently, final surface temperature and voltage are measured. These measurements enable calculating the battery temperature rise value and the maximum differential temperature value. An empirical method determines the differential temperature gain value. From these values, a capacity parameter is calculated. Then, a differential voltage value is derived from the initial and final battery cell voltages. Further, first, second, and third capacity coefficients are empirically determined, allowing the calculation of the capacity of the battery cell(s).

Abstract: The present disclosure generally relates to magnetoresistive (MR) devices. The MR device comprises a synthetic antiferromagnetic (SAF) layer that increases stability to magnetic fields, and in turn, results in lower magnetic noise of the device. The MR device comprises a first ferromagnetic (FM1) layer and a second ferromagnetic (FM2) layer, in between which is an SAF spacer of RuAl alloy having a B2 crystalline structure with (001) texture, meaning that the (001) plane is parallel to the surface of MR device substrate. The first ferromagnetic (FM1) layer and a part of the second ferromagnetic (FM2) layer also have the (001) texture. An amorphous layer in a second ferromagnetic (FM2) layer can reset the growth texture of the MR device to a (111) texture in order to promote the growth of an antiferromagnetic (AF) pinning layer.

Abstract: The device to estimate the lifetime consumption of one or more electrolytic capacitors comprises a temperature sensor which is thermally insulated from the ambient by being arranged either between two equal electrolytic capacitors connected in parallel with each other or on the case of an electrolytic capacitors and where it is covered with a layer of thermally insulating material. The device comprises further a controller which is suitable to estimate the lifetime consumption based on the measurement data of the temperature sensor.

Abstract: This application provides a charge current test method and device, and a charge test system. The method includes: charging a to-be-tested battery at a first current under a first temperature until a voltage of the to-be-tested battery reaches a preset cutoff voltage, stopping charging whenever an increment of a state-of-charge value of the to-be-tested battery reaches a preset value during the charging of the to-be-tested battery, and continuing to charge after a duration of stopping charging reaches a first preset time length; calculating an impedance of the to-be-tested battery during the first preset time length; and determining, based on the impedance, a maximum state-of-charge value that is allowed to be reached when the charging is performed at the first current under the first temperature.

Abstract: A battery management apparatus according to the present disclosure includes a voltage measurement circuit to measure a cell voltage of each of a plurality of battery cells; and a control unit to determine the cell voltage of each of the plurality of battery cells and a reference voltage of the plurality of battery cells at a preset time interval during a rest period. The control unit determines a first accumulated change of the cell voltage of each battery cell during the rest period. The control unit determines a second accumulated change of the reference voltage during the rest period. The control unit determines whether each battery cell is defective by comparing the first accumulated change of each battery cell with the second accumulated change.

Abstract: Method for controlling and regulating a rechargeable battery having energy storage cells, control electronics, a voltage measurement device and a sensor device, wherein the sensor device and the energy storage cells are respectively connected to one another via at least one controllable switching element so that electrical energy can be conducted from the energy storage cells to the sensor device. The method includes: capturing a first voltage value of the first and second energy storage cells of the voltage measurement device, and adjusting the at least one switching element from a deactivation mode to an activation mode if the difference between the voltage value of the first energy storage cell and the voltage value of the second energy storage cell reaches a predetermined threshold value, in order to conduct electrical voltage from the energy storage cell with the higher voltage value to the sensor device.

Abstract: The invention relates to a method, implemented in a management system of an electric battery of a vehicle, for estimating the resistive state of health of at least one electrical energy storage element, the method comprising the next steps: —determining (10) at least one operating range for which the direct current resistance of the element changes linearly with respect to the state of charge of the element and to temperature; —measuring (14) the variation in the strength and the voltage of an electric current generated by the element during a running phase of the vehicle; —calculating (16), based on the measured values of variation in strength and voltage, at least one direct current resistance value of the element; and —calculating (18) at least one value of the resistive state of health of the element based on the calculated direct current resistance value.

Abstract: One or more circuits and/or methods are provided. In an example, a circuit includes a first sampling capacitor connected to a first battery terminal for connecting to a battery, an excitation circuit connected to the first battery terminal and configured to generate a first excitation signal, and a measurement circuit connected to the first sampling capacitor and configured to measure charge transferred to the first sampling capacitor by the first excitation signal to generate a charge transfer measurement and to determine a first impedance measurement across the first battery terminal and a second battery terminal for connecting to the battery based on the charge transfer measurement.

Abstract: A degradation degree assessment device for a secondary battery is to assess a degree of degradation of a secondary battery and includes a battery characteristic acquisition unit, a capacity estimation unit, and an assessment unit. The battery characteristic acquisition unit acquires a battery characteristic relating to a voltage transition of the secondary battery in a predetermined voltage section. The assessment unit assesses the degree of degradation of the secondary battery based on the battery characteristic acquired by the battery characteristic acquisition unit or based on a battery characteristic-related value computed on the basis of the battery characteristic.

Abstract: An overvoltage characteristics evaluation apparatus for a battery includes a sensing unit to measure a current and a voltage of the battery, and a control unit to determine a measured capacity history and a measured voltage history of the battery during a discharge event executed subsequent to polarization-inducing pretreatment for the battery. The control unit determines a first measured voltage curve indicating a correlation between the measured capacity history and the measured voltage history, and a second measured voltage curve indicating a correlation between a depth of discharge history obtained by normalizing the measured capacity history to a total discharge capacity of the measured capacity history and the measured voltage history. The control unit determines a differential voltage curve by differentiating the measured voltage history.

Abstract: The present technology provides a method of detecting a battery cell having a low voltage defect, including: setting a reference time point when a voltage of a battery is stabilized after a shipping charge, and measuring a first voltage of a battery cell at the reference time point; measuring a second voltage of the battery cell with a temporal interval longer than a period at which a self discharge of the battery cell is suppressed; and determining whether the battery cell has a low voltage defect by comparing a difference (?OCV) between the first voltage and the second voltage with a reference value, wherein the reference value is +3 sigma (?) to +6 sigma (?) in a normal distribution of a voltage drop amount obtained by the measuring of the first voltage and the measuring of the second voltage for a plurality of normal sample battery cell groups.

Abstract: A battery cell pass determination apparatus and a battery cell pass determination method involving verifying, after the battery cell is manufactured, whether the capacity of the battery cell repeatedly charged and discharged for a predetermined number of times satisfies a predetermined reference capacity, that is, determining whether a battery cell is a pass without having to charge and discharge a battery for 300 times, so that it is possible to quickly determine whether the battery cell is a pass.

Abstract: A system for determining a change of saturation of an adsorbent susceptible to adsorption of species in an adsorption chamber, the system comprising: an adsorbent-holding-ferrite-material cage; a cage holder configured to hold the cage within the adsorption chamber such that the movement of the cage at least in a first axis is restricted to a smaller extent than in a second axis; an exciter comprising a coil arranged at the cage, wherein the coil is connected to a voltage generator and the exciter is configured to induce eddy currents within the cage resulting in oscillation of the cage in the first axis; a spectrum analyzer connected to the coil and configured to analyze the voltage within the coil and determine its frequency response; and a saturation detector configured to determine the change of saturation based on the change of the frequency response determined by the spectrum analyzer.

Abstract: A plurality of driving circuits drive a plurality of contactors for connecting the battery pack and an external apparatus, respectively, based on a supply voltage. A processing circuitry control the plurality of driving circuits to sequentially close the plurality of contactors in a predetermined order, and check the supply voltage before closing each of the contactors.

Abstract: A body for a handheld metal detector includes a lower end configured to engage with a sensor head; an upper end including an armrest connected to an upper shaft element; and a grip element intermediate to the lower end and the upper end, the grip element including a grip portion configured to allow a user to hold the body, and a first retaining means for slidably retaining the upper shaft element such that the distance between the armrest and the grip element is able to be adjusted.