The present invention relates to a battery (100) comprising an electrode material (102a), an electrolyte material (104), a battery charge sensor (106, 206, 306) comprising a plasmonic sensing element (108, 208, 308) having a sensing volume (110, 210, 310) within the battery (100, 200, 401) and which upon illumination with electromagnetic radiation exhibits a localized surface plasmon resonance condition being dependent on a charge state of the battery (100, 200, 401). A system and a method for determining a charge state of a battery are further provided.

A battery management apparatus includes a processor configured to collect sensing data of a battery using a sensor, and infrared (IR) communicators located to face a neighboring battery management apparatus of the battery management apparatus. The processor is configured to transmit the collected sensing data to the neighboring battery management apparatus using one of the IR communicators.

A sensor apparatus (10) for monitoring at least one battery cell (20) of a battery system (100), having a sensor element (11) for detecting at least one state variable of the battery cell (20), at least one electrically and/or thermally conductive connecting element (12) connected to the sensor element (11) so that the sensor element can be connected to the battery cell (20) and to an electronic unit (30) of the battery system (100), wherein the connecting element (12) is formed as a flexible printed circuit board (12).

Various embodiments of the present technology comprise a method and apparatus for determining a resistance value of a resistor in a battery system. In various embodiments, the apparatus comprises a sense resistor connected to a current sensor. The apparatus may be configured to compute a voltage-based RSOC value and a current-based RSOC value and extract a capacity value from each. Over time, the capacity values will diverge and the difference can be used to compute an actual value of the sense resistor.

To achieve higher measurement accuracy, repeated reproducibility, and durability than a probe using a gold thread, a probe used to measure electrical characteristics of a solar battery cell includes one or more thin plates that are conductors. The thin plates each have an elongated thin plate-like main body, one or more contacts that are thin wires extending in a longitudinal direction of the main body, and spring elements that are thin wires connecting the main body to the respective contacts.

A busbar module includes: a circuit body having a flexible circuit board; busbars; and a holder. The circuit body has: a band-shaped main strip to be located to extend in a stacking direction of cells; a band-shaped first branch strip branched from the main strip and extending toward a corresponding busbar; and a second branch strip branched from the main strip and extending toward an external device. The first branch strip has: a bent portion extending in the stacking direction and having a bent shape around an axis crossing the stacking direction; and a busbar connection portion disposed closer to an end of the first branch strip than the bent portion and connected to the corresponding busbar. The second branch strip has a device connection portion to be connected to the external device.

A high voltage diagnostic connector includes a housing holding a positive terminal, a negative terminal and a ground terminal with a cover removably coupled to the housing. An HVIL assembly is in the housing having a HVIL contacts and an HVIL shunt. An HVIL switch is held by the housing including a shunt actuator operably coupled to the HVIL shunt to position the HVIL shunt in an un-shunted position to open an HVIL circuit when in the primary position and in a shunted position to close the HVIL circuit when in the secondary position. The shunt actuator is movable between the primary position and the secondary position when testing the positive terminal, the negative terminal and the ground terminal with the testing device during diagnostic testing of the high voltage diagnostic connector.

In a DC impedance measurement routine for a battery the current load from a source is initially set to a low setting. The system waits for a set time in this state for the voltage readings to stabilize. Once the voltage is stable at the low current setting, the current setting is changed to a high value and the voltage is read quickly. Then the current load is set back to the low setting immediately after the reading is made. Several consecutive measurements are performed by repeating the steps above. A DC impedance measurement system that can be used to carry out the measurement routine. A multi-battery system can be monitored via a DC impedance measurement system and the routine being performed on each battery.

The present invention discloses an external battery short-circuit testing device, configured to perform short-circuit test on a battery pack under test. The external battery short-circuit testing device comprises a plurality of fuses; a Hall current transducer, coupled to the plurality of fuses; a current meter, coupled to the Hall current transducer and the battery pack under test; a voltmeter, coupled to the battery pack under test; a variable resistor, coupled to the Hall current transducer; an electromagnetic switch, coupled to the variable resistor and the battery pack under test; and an operation unit, comprising a voltage measurement unit, a current measurement unit, a temperature measurement unit and a switch control unit.

A circuit body includes: a plurality of conductors and a substrate having flexibility and provided with the conductors, in which the substrate includes a battery wiring portion which is routed along each row of electrodes and where one ends of the conductors are respectively connected to bus bars, and a pair of connector connecting portions in which the other ends of the conductors provided in respective battery wiring portions are located, the pair of connector connecting portions include a connector mounting portion where the pair of connector connecting portions are guided from opposite directions, and in the connector mounting portion, the other ends of the conductors of the pair of the connector connecting portions are alternately arranged and an arrangement order corresponds to the potential order of the bus bars connected to the conductors.