Devices and methods for impedance measurements are provided. A switched capacitor network is operated to cause an alternating current to flow between a battery and an energy storage, and the alternating current and a voltage across the battery are measured.

An integrated circuit includes a power supply terminal, a ground terminal, a plurality of first input terminals connected to a battery cell, a signal processing circuit having a plurality of second input terminals, and a switch unit, wherein the first input terminals and the second input terminals correspond to each other one-to-one, the switch unit electrically connects arbitrary second input terminals of the plurality of second input terminals to non-correspondence terminals, which are terminals that do not correspond to the arbitrary second input terminals, and the non-correspondence terminals are the second input terminals other than the arbitrary second input terminals, the first input terminals that do not correspond to any of the group consisting of the arbitrary second input terminals, the ground terminal, and the power supply terminal.

Systems and methods for battery testing including a holder system. The holder system is designed to couple one or more transducers to a battery under test, wherein the one or more transducers are configured for electrochemical-acoustic signal interrogation (EASI) of the battery. The holder system includes at least one arm to house at least one transducer to be coupled to the battery, and a pressure applying device to apply pressure to the at least one transducer, and to control pressure between the at least one transducer and the battery. The holder system is also configured to determine the pressure between the at least one transducer and the battery and adjust the pressure applied to the at least one transducer based on the determined pressure.

A method for operating a battery sensor, wherein the battery sensor has at least one measuring resistor and at least one voltage capture device for capturing a voltage drop across the measuring resistor and for outputting at least one measured value dependent on the captured voltage drop and an evaluation circuit, having the following steps of: determining, a correction value for the measured value by the evaluation circuit, and determining a first temperature value of the measuring resistor on the basis of the determined correction value by the evaluation circuit. A battery sensor which is designed to carry out such a method is also disclosed.

A contact function-equipped multichannel charge/discharge power supply 10 has: first and second charge/discharge probes 12, 13 respectively connected to positive and negative electrodes of secondary batteries 11 and first and second voltage-measurement probes 14, 15 respectively connected to the positive and negative electrodes of the batteries 11; and charge/discharge means 16 each provided for each of the batteries 11 and each connected to a pair of the first and second charge/discharge probes 12, 13. The power supply 10 includes: trays each having a right-angled-quadrilateral shape in plan view, in which the batteries 11 are arranged longitudinally and laterally at predetermined intervals; and substrates each having the charge/discharge means 16 provided along the batteries 11 arranged in each line in one direction, wherein the substrates are each provided with the first and/or second charge/discharge probes 12, 13 corresponding to the batteries 11 arranged in the each line in the one direction.

A vehicle battery diagnosis method and apparatus are provided. The vehicle battery diagnosis method includes receiving battery state history data including data stored based on state of charge (SOC) ranges of a battery and SOCs of the battery. Maximum distributions of the SOCs of the battery are then determined based on the battery state history data. A state of the battery is diagnosed based on a reduction rate among the maximum distributions of the SOCs of the battery based on the battery state history data.

A system and a method for calculating insulation resistance, and more particularly for calculating insulation resistance between a positive terminal and a negative terminal of a battery and a chassis based on voltages of the battery applied to a resistor that connects the positive terminal of the battery and the chassis and a resistor that connects the negative terminal of the battery and the chassis.

The present disclosure relates to a sampling assembly and a battery pack. The assembly comprises: a circuit board comprising a sampling unit; a first detector comprising a first and second connecting ends arranged at interval, wherein the first detector is connected to the circuit board via the first and second connecting ends to transmit information on first voltage between the first and second connecting ends to the circuit board, and the first detector is connectable in series to and between the two terminals to be detected; and a second detector located in a magnetic field generated by current flowing through the first detector and can generate information on second voltage according to the magnetic field, wherein the second detector comprises an output terminal and is connectable to the circuit board via the output terminal to transmit the information on second voltage to the sampling unit.

A charging and discharging jig for measuring an impedance of a battery cell includes: a fixed block including a first charging/discharging bus bar on an upper surface of a first side of the fixed block; a movable block slidably coupled to the fixed block, the movable block including a second charging/discharging bus bar on an upper surface of a second side of the movable block opposite to the first side of the fixed block; a moving block slidably coupled to a bottom surface of the fixed block; and electric wires fixed to the first side of the fixed block and the second side of the movable block, the electric wires being configured to extend along the bottom surface of the fixed block and a bottom surface of the movable block.

A battery module according to the present disclosure includes: a cell stack including a plurality of battery cells that are stacked in one direction; and a sensing module located on a front portion or a rear portion of the cell stack for voltage sensing and electrical connection of the plurality of battery cells, wherein the sensing module includes: a main frame formed to cover a front surface or a rear surface of the cell stack and including a plurality of lead holes through which electrode leads of the plurality of battery cells are drawn out; a plurality of bus bars located on the main frame to be spaced apart from one another in one direction; and a printed circuit board formed of a rigid material, including a plurality of sensing tips detachably provided on corresponding bus bars, and attached to the main frame.