Abstract: Provided are a battery management system, a battery management method, a battery pack and an electric vehicle. The battery management system includes a sensing unit to generate battery information indicating a current, a voltage and a temperature of a battery, and a control unit. The control unit determines a temporary estimate for a SOC in a current cycle using a time update process of an extended Kalman filter based on a previous estimate indicating a SOC in a previous cycle and the battery information. The control unit determines open circuit voltage (OCV) information based on the temporary estimate. The control unit determines a definitive estimate indicating the SOC in the current cycle using a measurement update process of the extended Kalman filter based on the temporary estimate, the OCV information and the battery information.

Abstract: A self-standing sandwich structure includes at least one capacitive sensor member and/or at least one heater member for automotive vehicle application. The self-standing sandwich structure includes an upper protective layer that is attached, for manufacturing and storage purposes, to a carrier film member of sufficiently low surface energy for enabling separating the carrier film member and the upper protective layer in a non-destructive manner, a lower protective layer, a bottom adhesive layer that is attached to the lower protective layer, and at least an upper electrically conductive layer arranged between the upper protective layer and the lower protective layer.

Abstract: A battery pack according to an embodiment of the present disclosure may include a plurality of battery cells and a BMS for controlling the battery pack. The BMS may include a state-of-charge (SOC) calculation module for calculating a SOC of each of the plurality of battery cells included in the battery pack and a faulty battery cell detection unit for detecting at least one faulty battery cell on the basis of the calculated SOC of each of the plurality of battery cells.

Abstract: A device for detecting a secondary battery of an uninterruptible power system contains: a main battery module and at least one sub battery module. The main battery module includes a first power storage unit, a first detection unit, a first processing unit, a communication unit, and a first data transmission unit. The first power storage unit includes multiple first battery assemblies connected in series, and a respective first battery assembly has at least one secondary battery. The first detection unit includes multiple first detectors. The first data transmission unit includes a first one-way transmit port and a first two-way transmit port. The sub battery module includes a second power storage unit, a second detection unit, a second processing unit, and a second data transmission unit. The second power storage unit includes multiple second battery assemblies connected in series. The second detection unit includes multiple second detectors.

Abstract: A method for testing a mechanical performance of a lithium ion battery electrode based on a nano-indentation technology includes following steps: connecting an assembled lithium ion battery with an electrochemical test device and setting different test working conditions, so that cyclic charge and discharge experiments are performed on the battery to obtain an attenuation curve of a battery capacity; disassembling the battery and taking out the electrode; scraping some powder from a surface of the cyclic electrode plate and an initial uncyclic electrode plate, and laying down the powder in cold mounting molds separately, pouring the cold mounting solution into the molds; taking out the samples from the molds respectively after the liquid is completely cured and cooled; detecting a mechanical performance after polishing the samples surfaces and analyzing the mechanical performance decay rule of the electrodes.

Abstract: A Battery Management System (BMS) semiconductor device having a leakage current detection function, may include: a comparator configured to compare a voltage of a balancing terminal connected to a positive voltage terminal of a battery cell and a voltage of a lower sensing terminal connected to a negative voltage terminal of the battery cell and output a result of the comparing; an ADC connected to the upper sensing terminal and the lower sensing terminal and configured to sense a voltage difference between the upper sensing terminal connected to the positive voltage terminal of the battery cell and the lower sensing terminal; and a leakage current determining unit connected to the ADC and the comparator and configured to set a variable threshold value according to the difference value sensed by the ADC and determine whether a leakage current is generated by using the result of the comparing in the comparator and the variable threshold value.

Abstract: A capacitive sensor includes a switching capacitor circuit, a comparator, and a charge dissipation circuit. The switching capacitor circuit reciprocally couples a sensing capacitor in series with a modulation capacitor during a first switching phase and discharges the sensing capacitor during a second switching phase. The comparator is coupled to compare a voltage potential on the modulation capacitor to a reference and to generate a modulation signal in response. The charge dissipation circuit is coupled to the modulation capacitor to selectively discharge the modulation capacitor in response to the modulation signal.

Abstract: A capacitive sensor arrangement includes a sensing electrode having a capacitance (Cx) which depends on the presence of an object in a detection space; a measurement device connected to the sensing electrode and configured to detect the capacitance (Cx) of the sensing electrode; and a conducting structure, wherein the capacitance (Cx) of the sensing electrode depends on a potential of the conducting structure. In order to obtain a reliable capacitive measurement, the measurement device is connected to a power supply between a first potential (Vs) and a second potential (GND), the measurement device being connected to the second potential exclusively via the structure.

Abstract: A vehicle includes a body and a door coupled to the body. The door is operable between opened and closed positions. A cinch assembly is operably coupled to the door. A door seal is positioned along at least a portion of a door opening, wherein the door seal includes a first conductor and a second conductor positioned therein. The first and second conductors are dielectrically isolated and cooperate to generate a capacitive signal. A controller is configured to monitor the capacitive signal and control the cinch assembly in response to the capacitive signal.

Abstract: Aspects of the present invention include a system and method for differentiating a plurality of objects detected behind an opaque surface, including, a plurality of sensors, controlled by one or more processors, configured to collect in parallel, sensor data of the plurality of objects behind an opaque surface, the one or more processors are configured to analyze the sensor data to identify estimated regions of the plurality of objects behind the opaque surface, the one or more processors are further configured to differentiate the estimated regions of the plurality of objects behind the opaque surface, and, the one or more processors are further configured to inform a user, via a user interface, of the plurality of objects within the estimated regions behind the opaque surface.

Abstract: An apparatus and method for diagnosing whether a charging and discharging switching element provided on a charging and discharging path of a battery pack operates normally. A charging and discharging switching unit having a charging and discharging switch and a fuse is installed on a charging and discharging path between a battery cell and a pack terminal. The apparatus includes a first diagnosing path a second diagnosing path, a third diagnosing path, an integrated diagnosing path having a diagnosis switching unit and a diagnosis resistor, a voltage measuring unit, and a control unit configured to turn on and off the diagnosis switching unit and determine whether the charging and discharging switching unit is operating abnormally based on the diagnosis voltage measured by the voltage measuring unit.

Abstract: One or more external connectors of a conformal wearable battery (CWB) may be controlled to reduce a voltage potential supplied to the connectors when exposed to a conductive liquid. The connectors may be uniform serial bus (USB) connectors or other connectors. One or more unused terminals of the one or more connectors may be pulled to a voltage potential and then monitored for a change in voltage. When the change in voltage satisfies a voltage threshold, the voltage potential supplied to the one or more connectors may be reduced and/or interrupted. The change in voltage may be evaluated against the voltage threshold alone or may be evaluated against the voltage threshold and a time threshold relating to a time after the voltage satisfied the voltage threshold. The voltage of the monitored terminal may be evaluated against one or more voltage thresholds and/or one or more time thresholds. Based on the voltage threshold having been met, the voltage supplied to the connector may be reduced or stopped.

Abstract: A method for determining the state of an electric energy storage unit is described. An extension of the electrode assembly and/or a force exerted by the electrode assembly, and at least one electric variable of the electric energy storage unit are detected. A first and a second state variables, which represent the first state of the electric energy storage unit, are ascertained using the detected extension and/or the detected force and also a first mathematical model stored in a data memory and the detected at least one electric variable and also a second mathematical model stored in a data memory. This is followed by carrying out a first comparison of the first state variable with the second state variable. The first and/or the second mathematical model and/or the first and/or the second state variables are/is changed depending on the first comparison.

Abstract: A device may determine an analog gain for an aggregated analog signal. The aggregated analog signal may be associated with a calibration test to be used to determine a set of calibration parameters for a load test of a base station. The device may determine the set of calibration parameters for the load test based on an outcome of performing a calibration test. The set of calibration parameters may result in a set of digital gains approximately centered in a digital dynamic gain range. The device may perform the load test after determining the analog gain for the analog signal and based on the set of calibration parameters for the load test.

Abstract: An apparatus for monitoring health of one or more cells in a battery includes a health monitoring system configured to measure voltage on one or more cells when a waveform is injected into the one or more cells. The waveform is measured at an end of a pulse for each current.

Abstract: Provided are a cell screening device for selecting battery cells of a high-risk group, and a cell screening method using the same. According to the present invention, the battery cells may be ordered in the order of high probability of being out of an upper limit value or a lower limit value of an operating voltage among a plurality of battery cells using state information calculated for each battery cell, thereby making it possible to select the battery cells of the high-risk group.

Abstract: A ground fault detection device connected to a high-voltage battery and a positive electrode side Y capacitor includes: a detection capacitor operating as a flying capacitor, a first switch and a first resistor connecting a positive electrode side of the high-voltage battery and one end of the detection capacitor in series, and a discharge circuit including at least a discharge capacitor. The discharging circuit has one end connected to the positive electrode side of the high-voltage battery and an another end connected to the negative electrode side of the high-voltage battery. The discharge circuit further includes: a fifth switch that connects one end of the discharge capacitor and the positive electrode side Y capacitor, and a second discharge resistor and an eighth switch that connect the another end of the discharge capacitor and the ground in series.

Abstract: The present disclosure provides a method for preparing nitrogen oxide gas sensor based on sulfur-doped graphene. The method includes: 1) providing graphene and a micro heater platform substrate, and transferring the graphene onto the micro heater platform substrate; 2) putting the micro heater platform substrate covered with the graphene into a chemical vapor deposition reaction furnace; 3) performing gas feeding and exhausting treatment to the reaction furnace by using inert gas; 4) simultaneously feeding inert gas and hydrogen gas into the reaction furnace at a first temperature; 5) feeding inert gas, hydrogen gas and sulfur source gas into the reaction furnace at a second temperature for reaction to perform sulfur doping to the graphene (21); and 6) stopping feeding the sulfur source gas, and performing cooling in a hydrogen gas and insert gas shielding atmosphere.

Abstract: A method and system for determining a failsafe value for a biosensor having two perimeter electrodes, a distal electrode, and a proximal electrode are disclosed. A liquid measuring medium is applied to a capillary channel of the biosensor. The method includes applying an alternating voltage to the perimeter electrode and the proximal electrode, measuring conductivity to determine a first impedance between the perimeter electrode and the proximal electrode, applying the alternating voltage to the perimeter electrode and the distal electrode, measuring conductivity to determine a second impedance between the perimeter electrode and the distal electrode, determining a value using the first impedance and the second impedance, and providing an error message to the user if the value is out of tolerance. If the value is out of tolerance, then defects or breaks in the electrodes and/or reagent in a reaction area are present and the method disallows the test result.

Abstract: An electromagnetic relay diagnostic device includes: an operation detection unit including a first light-emitting unit emitting light when a current flows through a wiring line connected to a coil of an electromagnetic relay; an operation detection unit including a second light-emitting unit emitting light when a current stops flowing through the wiring line; an operation detection unit including a third light-emitting unit emitting light when detecting a change in conductive state of a wiring line connected to a contact of the electromagnetic relay; an operation detection unit including a fourth light-emitting unit emitting light when detecting that the change in conductive state of the wiring line has disappeared; an imaging unit capturing a moving image of the operation detection units; and a diagnostic unit calculating a contact-on operation time and a contact-off operation time using the moving image, and diagnosing whether an abnormality has occurred in the electromagnetic relay.