Abstract: An insulation detection method includes closing a main positive relay and a main negative relay in a high voltage safety box of each electric cabinet in an energy storage system; controlling an insulation detection board to perform insulation detection at a main power management system, and to report an insulation detection result to a power conversion system; controlling, if the insulation detection result at the main power management system indicates no fault and no instruction of starting insulation detection at the power conversion system is received, the insulation detection board to continue performing the insulation detection; and instructing, if the insulation detection result at the main power management system indicates an insulation fault, a battery management system of each electric cabinet to control the main positive relay and the main negative relay in the high voltage safety box to turn off.

Abstract: A battery monitoring system includes a battery pack for a vehicle and a battery monitoring device that monitors a state of a battery cell included in the battery pack. The battery pack includes an acquisition unit configured to acquire battery information of the battery cell, a first storage unit configured to store the acquired battery information, and a first communication unit configured to transmit the battery information stored in the first storage unit to the battery monitoring device. The battery monitoring device includes a second communication unit configured to receive the battery information transmitted from the first communication unit, a second storage unit configured to store the received battery information, and a third storage unit configured to store initial battery information indicating a battery state at the time of manufacture of the battery pack.

Abstract: To provide a measuring apparatus that can detect a wide range of capacitance values with high sensitivity.

Abstract: A sensor includes a substrate, a reference electrode provided above the substrate, a lower electrode provided above the reference electrode via an insulating film, and an upper electrode provided above the lower electrode via a physical quantity detecting film. The upper electrode and the lower electrode form a parallel-plate-type detection capacitor, and the lower electrode and the reference electrode form a parallel-plate-type reference capacitor.

Abstract: Systems, devices, and methods including: a relay, the relay including: at least one contact; a reflector attached to at least one contact; a sensor, the sensor including: an emitter configured to emit a pulse; a detector configured to receive a portion of the emitted pulse; where the reflector may be configured to reflect at least a portion of the emitted pulse to be received by the detector when the at least one contact may be in at least one of: an open position and a closed position.

Abstract: A device of measuring a duty cycle includes a resistor-capacitor circuit and a control circuit. The resistor-capacitor circuit is used to generate a first voltage when a reference signal is in a first state, and generate a second voltage and a third voltage when the reference signal is in a second state. The control circuit is coupled to the resistor-capacitor circuit, and configured to acquire an ON-time according to the first voltage, the second voltage and the third voltage. The ON-time is a time interval during which the reference signal is in the first state.

Abstract: The present invention relates to a method for determining a state of charge of a battery, including: (a) acquiring a state of charge of the battery at a current sampling time point tn; (b) acquiring a voltage Vn, a temperature Tn, and a charging rate Cn of the battery at the current sampling time point tn, and a voltage Vi of the battery at a sampling time point ti, and calculating a voltage difference Vn?Vi between the voltage Vn and the voltage Vi; (c) when the voltage difference Vn?Vi is greater than or equal to a preset voltage threshold, calculating a voltage change rate; and (d) when the voltage change rate is greater than or equal to a preset voltage change rate threshold for the first time, acquiring a corrected state of charge of the battery as an actual state of charge of the battery.

Abstract: A device for monitoring battery cells of a battery string under load condition. The device has differential voltage units for each battery cell, wherein a band-pass filter is arranged downstream of each differential voltage unit, wherein the band-pass filters are connected to rectifier circuits with a smoothing circuit arranged downstream, and wherein the device is designed so the output signals of the smoothing circuits are supplied to an evaluation unit and are compared for deviations in relation to a standardized output signal.

Abstract: A source follower for a capacitive sensor device having a sense node and a shield node is provided. The source follower may include a transistor, and a switch array selectively coupling the transistor between the sense node and the shield node. The switch array may be configured to substantially disable current to the transistor during a first mode of operation, precharge the transistor during a second mode of operation, and enable the transistor to copy a sense node voltage to a shield node voltage during a third mode of operation.

Abstract: The battery monitoring techniques described herein may be used for detection of battery anomalies or faults. Also, the battery monitoring techniques described herein may be used to generate estimates of total battery capacity. The battery monitoring techniques may employ an alternating current frequency response (ACFR) of the battery. The ACFR response of the battery may be used to detect anomalies and/or estimate a total capacity of the battery.

Abstract: The disclosure relates to accurately determining a DC energy signal, such as a DC current or DC voltage, which may be particularly useful when controlling a formation/testing current of a battery cell during formation and/or testing. In the battery formation/testing context, a current sensor is used to measure the current of the battery cell, which is used as a feedback signal for controlling the current to achieve a target current. The transfer function of the current sensor is used to improve the accuracy of the current measurement. Because the transfer function can be regularly determined during formation/testing, a lower-cost current sensor with relatively poor temperature coefficient may be used. Any change in the gain of the current sensor may be detected by the transfer function determination and corrected for. Therefore, high current control accuracy may be achieved at lower cost.

Abstract: The inventive disclosures pertain to an improved roofing-protection system that features enhanced leak-detection and analytical capabilities. The improved system features RFID-enabled moisture-sensing elements contained in a moisture-sensing membrane, and can measure impedance changes across the moisture-sensing membrane. In some variations, the system is designed to detect and measure moisture leakage and roof loading by way of biplanar capacitance measurements. RFID tags for moisture sensors are read by drones or robots and wirelessly transmitted to the Cloud/Internet for remote data analytics.

Abstract: A multifunctional battery health state detection device is disclosed, which includes a housing, two ignition clamps for connecting to a vehicle battery; a microcontroller; a sampling circuit connected to the two ignition clamps for sampling a voltage signal of the vehicle battery; and an indicator unit including a plurality of indicators configured to display a ranking of the battery health state of the vehicle battery. The microcontroller is configured to obtain the sampled voltage signal from the sampling circuit, detect the ranking of the battery health state based on the sampled voltage signal, and control the indicator unit to display the battery health state according to the ranking of the battery health stat, and boost the vehicle battery by providing starting energy from a portable power supply to the vehicle battery in response to detecting the battery health state being one of two lowest rankings among a plurality of rankings.

Abstract: The present invention provides a classification method and system for rechargeable batteries based on stable charging current or current leakage. A charging current should be zero theoretically when a rechargeable battery is fully charged, however, due to self-discharging effect, there exists a current leakage even after the battery is fully charged. Rechargeable batteries can be classified based on their stable charging current after being fully charged. Different classified rechargeable batteries can be adopted for different purposes.

Abstract: A battery maintenance device for performing maintenance on a battery pack of an automotive vehicle powered by the battery pack includes communication circuitry configured to retrieve information related to condition of batteries/cells of the battery pack obtained using sensors in the battery pack. Measurement circuitry couples to batteries/cells of the battery pack and obtains measurement information related to a measured condition of batteries/cells of the battery pack. A controller verifies operation of the sensors in the battery pack by comparing the retrieved information with the measurement and provides a comparison output. Output circuitry outputs an indication of a failing sensor in the battery pack based upon the comparison output.

Abstract: A state of health of cell groups of a battery may be determined based on direct current impedance values of the cell groups. A computing apparatus may be configured to determine a direct current internal resistance (DCIR) value of each of the cell groups of the battery pack to provide a plurality of DCIR values. Each cell group may include a plurality of battery cells. The computing apparatus may be configured to determine an average DCIR value based on the plurality of DCIR values and determine a relative DCIR threshold for at least one of the plurality of cell groups based on the average DCIR value. The computing apparatus may further be configured to provide an alert to a user in response to the DCIR value of the at least one of the plurality of cell groups exceeding the relative DCIR threshold.

Abstract: A proximity sensor unit includes a proximity sensor section including a sensor electrode capable of detecting a capacitance value according to a distance to an object to be detected in a detection direction and a moving device capable of moving the sensor electrode of the proximity sensor section or the object to be detected in the detection direction.

Abstract: A signal transmission device includes a signal transmission chip, and a first lead frame supporting the signal transmission chip. A first inductor spiral ring is on a surface of the signal transmission chip, a second inductor spiral ring is inside the signal transmission chip, a first bonding pad is electrically coupled between the first and second inductor spiral rings, a guard ring covers the first and second inductor spiral rings in a plan view, and bonding pads are outside of the guard ring. A direction of rotation between the first and second inductor spiral rings are different from each other. The signal transmission device further includes a semiconductor chip and a second lead frame supporting the semiconductor chip, wherein the signal transmission chip and the semiconductor chip face each other.

Abstract: A system or method for determining a battery state can include generating a set of models based on a measured response of a plurality of batteries to an applied load, measuring battery properties of a battery, and using a state estimator to determine a battery state associated with a battery.

Abstract: A battery management system includes a microcontroller unit which transmits and receives communications information through a communications input/output terminal, a fault generator unit which generates fault information and transmits the fault information through a fault information output terminal, and a battery cell monitoring unit which is coupled to the communications input/output terminal and the fault information output terminal and diagnoses an operation of internal function based on the fault information transmitted from the fault generator unit and outputs an internal diagnosis result value to the microcontroller unit.