Abstract: A battery pack in accordance with an embodiment may include a battery management system (BMS) controlling the battery pack, the BMS includes an internal resistance value calculation module calculating an internal resistance value for each battery cell directly after the battery pack is charged or discharged for a predetermined time, a maximum internal resistance valued battery cell detection module detecting a battery cell having a biggest internal resistance value of the calculated internal resistance values, and a defective battery cell determination module determining a defective battery cell on the basis of a detected number of time each battery cell has the biggest internal resistance value.

Abstract: A battery management device of a vehicle management system is installed at a vehicle and provided in a battery pack that houses a battery, the battery management device including a voltage sensor that detects a voltage value of the battery; a current sensor that detects a current value of the battery; and a battery monitoring integrated circuit that is communicably connected to the voltage sensor and the current sensor and outputs, to a battery control device, a signal representing the voltage value acquired from the voltage sensor and a signal representing the current value acquired from the current sensor.

Abstract: A battery monitoring apparatus is used in a battery assembly equipped with a plurality of batteries connected in series with each other. A plurality of measuring lines are mounted on a given layer of a multi-layer substrate and work to measure electrical potentials developed at terminals of the batteries, respectively. The measuring lines are classified into measuring line groups in order of electrical potential from lowest to highest. A plurality of solid patterns are arranged on one of layers of the multi-layer substrate other than the given layer and provided one for each of the measuring line groups. The solid patterns overlap the measuring line groups in planar view in a stacking direction of the multi-layer substrate. The solid patterns are arranged away from each other. The higher electrical potentials of the measuring line groups are, the higher electrical potentials of the corresponding solid patterns are.

Abstract: A battery management system includes a set of N battery modules coupled together in series, a set of N battery monitors, and a controller. Each battery monitor in the set of N battery monitors is coupled to a respective battery module in the set of N battery modules and measures a battery parameter of the respective battery module. The controller determines a preprogrammed delay for each battery monitor and provides the respective preprogrammed delay to each battery monitory. The controller transmits a synchronization command to the set of N battery monitors, which wait the respective preprogrammed delays in response to receiving the synchronization command before stopping updates to values of the respective battery parameters. The controller transmits a read command to the set of N battery monitors, which transmit read responses to the controller comprising values of the battery parameters.

Abstract: The disclosure provides a gas detector with an ionizing device for producing ions depending on a gas to be detected. The gas detector includes a catcher for receiving the electrical current produced by the ions, and a measuring device with an electrical measuring resistor. The electrical measuring resistor produces an electrical measuring potential from the current and is surrounded, at least in part, by an electrical shield resistor, denoted by RT. The same potentials, up to a deviation of at most 25%, are applied in the longitudinal direction of the electrical measuring resistor to mutually opposed regions of the electrical measuring resistor and the electrical shield resistor.

Abstract: A clock delay circuit is configured to generate a delayed clock signal based on an input clock signal, the delayed clock signal delayed by a delay time (TDEL). The circuit includes a current mirror configured to generate starved currents based on the reference current, a plurality of inverters, and a Schmitt trigger configured to generate an output signal in response to the input clock signal, wherein the Schmitt trigger output signal increases from a low signal to a high signal over a period (TCHARGE) correlated with TDEL. Some inverters and the Schmitt trigger are configured to be current starved when the input clock signal is high and are configured to be shorted to ground and the reference current when the input clock signal is low. TDEL is based on TCHARGE and TCHARGE is based on C, NTOP, VST,High, and a supply voltage.

Abstract: An apparatus and method of detecting a thermal runaway of a battery for an electric vehicle are provided. The apparatus includes a plurality of battery cells that are connected in series through a high voltage (HV) line and a battery module including the plurality of battery cells. A plurality of main sensing lines are electrically connected to the HV line between the plurality of battery cells to measure voltages of respective battery cells. A plurality of auxiliary sensing lines are respectively connected to an HV line as an input line of the battery module and to an HV line as an output line of the battery module to measure a voltage of the battery module.

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: Energy storage cell qualification and related systems, methods, and devices are disclosed. A method of qualifying rechargeable battery cells includes taking measurements on the rechargeable battery cells, determining specific capacity distributions of the rechargeable battery cells as a function of a number of discharge cycles based on the measurements, determining one or more specific capacity thresholds to separate the specific capacity distributions of the rechargeable battery cells into two or more classifications, and qualifying the rechargeable battery cells into the two or more classifications based, at least in part, on the specific capacity distributions and the one or more specific capacity thresholds. A method of implementing rechargeable battery cells into product manufacturing and qualifying the rechargeable battery cells, and deploying those of the rechargeable battery cells qualified into a first classification of the two or more classifications into the product.

Abstract: A system and method for performing a vehicle battery test includes a battery tester having a controller programed to obtain a first battery parameter and a second battery parameter of a primary battery from a vehicle controller, compare the first battery parameter to a first threshold, compare the second battery parameter to a second threshold and perform a reserve charge test on the battery using the battery tester or generating a display indicative of high corrosion or a bad cell in response to the compare the first battery parameter and compare the second battery parameter steps being performed by the controller.

Abstract: Examples of determining electronic component authenticity via electronic signal signature measurement are discussed. Reference pin identifiers corresponding to pins of a known authentic electronic component are determined. Measurement values corresponding to characteristics of pins of an electronic component are obtained, and pin identifiers based on the measurement values are generated. Accordingly, an indication that the electronic component is authentic can be provided based at least in part on a comparison of the pin identifiers and the reference pin identifiers.

Abstract: A chopping technique, and associated structure, is implemented to cancel the magnetic 1/f noise contribution in a Tunneling Magnetoresistance (TMR) field sensor. The TMR field sensor includes a first bridge circuit including multiple TMR elements to sense a magnetic field and a second circuit to apply a bipolar current pulse adjacent to each TMR element. The current lines are serially or sequentially connected to a current source to receive the bipolar current pulse. The field sensor has an output including a high output and a low output in response to the bipolar pulse. This asymmetric response allows a chopping technique for 1/f noise reduction in the field sensor.

Abstract: Various embodiments of the present invention relate to a method for detecting and controlling a battery status by using a sensor, and an electronic device using the same, the electronic device comprising: a housing; an accommodation part arranged inside the housing and including at least one gas sensor; a battery arranged inside the housing; a memory for storing information, acquired by the at least one gas sensor, on gas leaked from the battery and operation control information of the electronic device; and a processor electrically connected to the memory, wherein the processor is configured to acquire a detection signal of gas leaked from the battery by using the at least one gas sensor, and control the operation of at least a part of the electronic device and/or charging characteristics of the battery when the acquired gas detection signal exceeds a predetermined threshold value, so as to detect, in real time, a gas leakage of the battery occurring because of the exposure of the electronic device to high t

Abstract: A terminal apparatus detachably mounted on a battery module assembly made up of module units which are formed as aggregates of a plurality of cells and accommodated in a battery case through its open end. The apparatus has a computer which is programed to acquire state of the battery module assembly, to communicate acquired state of the battery module assembly to outside, and to connect or disconnect output of the battery module assembly to or from a load such as a vehicle electric motor, a factory electrical machine tool, home lighting fixtures and a construction machine electric motor by means of switch. The computer is further programed to detect change of the load and to switch output of the battery module assembly in accordance with changed load when the change of the load is detected.

Abstract: A processing apparatus is configured to receive a sense signal from a capacitive fluid sensor having a first electrode and a second electrode with a sensing region between the electrodes. The processing apparatus is configured to receive an alternating drive signal applied to the capacitive fluid sensor. The processing apparatus is configured to determine a complex impedance of the fluid sensor based on the sense signal and the drive signal. The complex impedance includes an in-phase component indicative of a conductivity quantity of a fluid in the sensing region and a quadrature component indicative of a capacitance quantity of the fluid sensor. The processing apparatus is configured to determine a temperature of the fluid in dependence on at least the determined capacitance quantity of the fluid sensor.

Abstract: A capacitive sensor includes a substrate and an electrode structure including at least a first electrode, a second electrode and a sensing layer arranged between the first electrode and the second electrode. The sensor further includes a measurement circuit configured to measure the capacitance of the electrode structure by applying, at a first measurement phase, a first pair of electrical potentials including a first electrical potential of the first electrode and a first electrical potential of the second electrode to the first electrode and the second electrode by applying, at a second measurement phase, a second pair of electrical potentials including a second electrical potential of the first electrode and a second electrical potential of the second electrode to the first electrode and the second electrode. The first electrical potential of the second electrode and the second electrical potential of the second electrode are different from each other.

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.