Abstract: Provided is a method and an apparatus for determining a state of charge of a battery, a battery management system and a storage medium, and relates to the field of battery technologies, where the method includes: obtaining a current OCV value of a battery and cumulative continuous charging or discharging capacity information of the battery; obtaining SOC credible information based on the current OCV value and the cumulative continuous charging or discharging capacity information; obtaining a corrected SOC value corresponding to the current OCV value according to the SOC credible information. According to the present disclosure, accuracy of SOC correction could be improved by determining the SOC credible information under the current OCV; for batteries, especially those with a hysteresis characteristic, accuracy of SOC estimation could be improved, an error of SOC estimation could be reduced and reliability of battery and experience of users could be improved.

Abstract: A system and method for estimation of grid impedance in a power converter controller is disclosed in which a current controller is provided to inject an injection current while operating online and coupled to a power grid at a point of common coupling (PCC), the injection current being benign to an operating current of the power converter. A voltage controller is provided to regulate input voltage of the power converter. An impedance module is provided to determine parameters for the injection current, including injection interval and duration, current magnitude, current frequency, and symmetrical components. The impedance module may extract measurements of current and voltage at the PCC at an operating point shifted from a previous operating point in response to the injection current. The impedance module may extract symmetrical components of current and voltage measurements, and compute estimated grid impedance based on the extracted symmetrical components.

Abstract: An impedance measurement device of the present disclosure includes: an electrochemical energy device; an amplifier connected to each connection terminal of the electrochemical energy device and configured to amplify a signal introduced into a wiring; and a main board configured to receive the signal from the amplifier and measure an impedance. Accordingly, the present invention has advantages in that high resistance to electromagnetic interference may be achieved by disposing a preamplifier close to a terminal of an electrochemical energy device to amplify only the signal without amplifying a noise introduced into a wiring.

Abstract: Technical solutions are described for diagnosing an input power supply providing power to a motor. A method includes: generating a sinusoidal stimulus signal; applying, using the input power supply, the sinusoidal stimulus signal to the motor; measuring a response to the sinusoidal stimulus signal; determining a degraded condition of the input power supply based on the response to the sinusoidal stimulus signal; and performing an action in response to determining the degraded condition of the input power supply.

Abstract: A quantum parameter amplifier; the quantum parameter amplifier includes a capacitor module, a first microwave resonant cavity, and an inductance-adjustable superconducting quantum interference apparatus that are connected in sequence to constitute an oscillation amplifier circuit, wherein, the superconducting quantum interference apparatus is grounded; the quantum parameter amplifier further includes a voltage modulating circuit and/or a second microwave resonant cavity; one end of the voltage modulating circuit is connected with an end of the superconducting quantum interference apparatus that is close to the first microwave resonant cavity; and one end of the second microwave resonant cavity is connected with the end of the superconducting quantum interference apparatus that is close to the first microwave resonant cavity.

Abstract: A method for determining a state value of a traction battery of an electric vehicle characterises the ageing state, preferably an SoH value. The traction battery is charged or discharged by a test load and a respective output voltage and load current value pair is acquired. An ohmic internal resistance is established on the basis of the acquired value pair. The state value is established on the basis of the established ohmic internal resistance. At least one normalisation variable characterizing the traction battery is established. On the basis of the established ohmic internal resistance and the normalisation variable, a normalised internal resistance based on a reference value of the normalisation variable is established. The state value is established on the basis of the normalised internal resistance. A diagnostics device has an evaluation unit which is directly or indirectly couplable to the traction battery and carries out the method.

Abstract: A voltage detection unit includes a voltage detection terminal including a first portion configured to be conductively connected to a detection target and a second portion, a housing having a plate shape and including a terminal accommodating concave configured to accommodate the voltage detection terminal, a cover configured to be engaged with the housing at a temporary locking position at which the cover does not cover the first portion of the voltage detection terminal accommodated in the terminal accommodating concave and at a final locking position at which the cover covers the first portion and an electric wire conductively connected to the voltage detection terminal at the second portion and configured to, when the voltage detection terminal is accommodated in the terminal accommodating concave, be drawn out from the housing.

Abstract: A method for determining the state of health of a battery by monitoring charging of the battery over multiple charging instances is provided. The method is implemented within charging stations by: recognizing the battery via a unique identifier; charging the battery; monitoring conditions of the battery during charging; storing data related to the current charging instance based at least partially on the monitored conditions; retrieving data related to at least one earlier charging instance of the uniquely identified battery; and making a determination of the uniquely identified battery's state of health based at least partially on a comparison of the data related to the current charging instance and the retrieved data related to at least one earlier charging instance.

Abstract: A failure detection apparatus includes: a first switch configured to be connected to a positive electrode of a battery; a second switch configured to be connected to a negative electrode of the battery; detection resistances that are connected in series between the first switch and the second switch; and a measurement circuit that measures a voltage of the detection resistances, wherein (i) both the first switch and the second switch are turned on to form a failure-detection series-connected circuit consisting of the battery and the detection resistances, and (ii) a failure detection mode is provided to detect a failure based on the voltage measured by the measurement circuit.

Abstract: A powder container includes a nozzle receiving opening, a container body, a nozzle receiver including the nozzle receiving opening; a gear, and two scoops. Further, there is a shutter to open and close the nozzle receiving opening, a spring to bias the shutter, two protrusions which protrude away from the nozzle receiving opening. The scoops extend in the longitudinal direction along a first length, the protrusions extend in the longitudinal direction along a second length, and a position of the first length and a position of the second length at least partly overlap along the longitudinal direction. The powder dropped from the higher position enters the region by passing between the protrusions when the scoops are rotated about the rotational axis, and the protrusions are rotated, due to the rotation of the gear, around the region when the scoops are rotated about the rotational axis.

Abstract: Systems, methods, and devices are provided for determining an early battery depletion (EBD) condition of an implantable medical device that includes a memory storing program instructions and a processor executing the program instructions. Circuitry is electrically coupled to the processor, and the circuitry and processor perform one or more tasks related to at least one of collecting signals indicative of physiologic activity, analyzing collected signals, delivering therapy, or communicating with an external device. A battery supplies energy to the circuitry and processor. A monitoring circuit coupled to the battery measures actual energy usage from the battery representing at least one of a current draw from the battery during corresponding tasks or a voltage measurement across the battery. Circuitry and processor calculate projected energy usage from the battery in connection with the corresponding tasks, and determine when an EBD condition exists based on projected energy usage and actual energy usage.

Abstract: A system, a method, and a computer program product for providing heterogeneous unifying battery storage. A state-of-health value of a battery is determined. The state-of-health value of the battery is less than an original capacity value of the battery. The battery is connected to an electrical power source for re-conditioning. A target state-of-health value for the battery and a number of cycles required to achieve the target state-of-health value of the battery are determined. Each cycle in the number of cycles includes at least one of: a charging the battery and a discharging the battery. The battery is re-conditioned by cycling the battery using the determined number of cycles. Cycling includes drawing electrical power from the electrical power source.

Abstract: The present disclosure discloses a system for vehicle battery life diagnosis, the system comprised of a measuring unit which is installed inside a vehicle and measures a state of charge change and a temperature of a vehicle battery, a calculating unit which calculates battery relaxation voltage when a battery power line is cut off, and a diagnosis unit which uses the state of charge change and temperature measured at the measuring unit and the battery relaxation voltage calculated at the calculating unit to diagnose battery life and status.

Abstract: The battery unit includes a storage configured to store (A1) and (A2) below, and a battery state estimator. (A1): a table map OCV vs. SOC characteristics. (A2): HF vs. SOC initial characteristics. The battery state estimator estimates, based on (A1), a start SOC corresponding to a detected OCV at a start of charge; measures HF vs. SOC present characteristics and detects a peak of differential characteristics of the measured HF vs. SOC present characteristics during the charge; determines a SOC at the detected peak as a SOC(HF) based on (A2); calculates a charge capacity from the start of the charge to detection of the peak; calculates a SOC(OCV) based on the calculated charge capacity and the start SOC; and in a case where the SOC(OCV) deviates with respect to the SOC(HF) by an amount of deviation equal to or greater than a predetermined value, corrects (A1).

Abstract: A method and a system for estimating degradation of a battery for an electric vehicle are provided. The method includes determining a current battery resistance increase rate by measuring an increase in resistance of the battery during charging of the battery, determining an initial battery resistance increase rate on the basis of a predetermined initial battery resistance increase rate map for indicating the battery resistance increase rate of the battery in a begin of life (BOL) state, and calculating current degradation of the battery on the basis of the current battery resistance increase rate and the initial battery resistance increase rate.

Abstract: Provided are an apparatus, method and battery pack for determining a degradation degree of a battery. The apparatus generates first sensing information indicating a voltage and a current of the battery while the battery is charged with a first constant current. The apparatus generates second sensing information indicating a voltage and a current of the battery for a second period during which the battery is discharged with a second constant current. The apparatus determines a first differential capacity curve based on the first sensing information and a second differential capacity curve based on the second sensing information. The apparatus is configured to determine the degradation degree of the battery based on a voltage value of a first charge feature point of the first differential capacity curve and a voltage value of a first discharge feature point of the second differential capacity curve.

Abstract: The present invention relates to a mobile system for continuous, automatic, online monitoring of water quality and particle sampling in a drinking water distribution network, comprising: a mobile unit provided with means for supplying, from at least a selected one of the plurality of points in the drinking water distribution network, a corresponding, selected influent fluid sample stream; means for discharging a corresponding, selected effluent fluid sample stream; for each selected influent fluid sample stream, a respectively associated continuous monitor module.

Abstract: A battery resistance diagnosis device includes a current supply unit configured to supply a preset fixed current to a battery cell, a voltage measurement unit configured to measure an open circuit voltage of the battery cell while the fixed current is supplied, an external resistance calculation unit configured to calculate an external resistance value of the battery based on the fixed current and the open circuit voltage of the battery cell, and an abnormality diagnosis unit configured to diagnose a battery abnormality due to a voltage drop by comparing the calculated external resistance value with a preset external resistance value.

Abstract: An estimation apparatus that estimates a degradation amount of an energy storage device includes: a storage unit; and an arithmetic processing unit. The energy storage device has a characteristic of including a first degradation area in which a temporal transition of a degradation amount shows a first transition and a second degradation area in which the temporal transition of the degradation amount shows a second transition. The storage unit holds first arithmetic data for calculating the degradation amount in the first degradation area, and second arithmetic data for calculating the degradation amount in the second degradation area. The arithmetic processing unit executes determination processing of determining a degradation area of the energy storage device, and estimation processing of selecting arithmetic data corresponding to the degradation area from the storage unit to estimate the degradation amount of the energy storage device.

Abstract: An object of the present invention is to provide a battery state estimation device capable of accurately estimating a deterioration state of an entire battery system in consideration of an SOH distribution of battery cells. The battery state estimation device according to the present invention estimates an SOH of a battery cell by using a correspondence between a time derivative of an output voltage during a pause period of the battery cell and a battery temperature, and estimates a deterioration state of an entire battery system by using the SOHs of a plurality of battery cells (see FIG. 1).