A solid electrolyte three-electrode electrochemical test device comprises a housing, a working electrode, a counter electrode, a reference electrode, a first conductive structure, a second conductive structure, a third conductive structure, and a solid electrolyte layer. The housing comprises a groove and a first through hole located at a bottom of the groove. The reference electrode is insulated from the counter electrode. The first conductive structure and the working electrode are stacked with each other, and the working electrode and at least a part of the first conductive structure are located in the first through hole. The solid electrolyte layer, the counter electrode, the reference electrode, the second conductive structure and the third conductive structure are located in the groove, and the first conductive structure, the working electrode, the solid electrolyte layer, the counter electrode, and the second conductive structure are sequentially stacked and located coaxially with each other.

A fractional-order KiBaM battery model considering nonlinear capacity characteristics and a parameter identification method includes a temporary capacity portion and an available capacity portion for describing nonlinear capacity characteristics of a battery, wherein the temporary capacity portion represents the power that can be directly obtained during the discharge, indicating the state of charge (SOC) of the battery; the available capacity portion represents the power that cannot be directly obtained, and such two portions are connected; when the battery is discharged, the load current i flows out from the temporary capacity portion, and a power passing rate coefficient of such capacity portions is obtained; and the nonlinear capacity effect and recovery effect of the battery are denoted by the height ratio of the temporary capacity and available capacity portions in view of the magnitude of the fractional order of battery capacity characteristics.

A battery accommodating mechanism includes a bottom plate, a battery accommodating device, a pin plate assembly and a top plate assembly sequentially arranged from bottom to top. The battery accommodating device includes a battery tray and a tray bottom plate assembly and mounting holes and cooling fans. The top plate assembly includes a top plate, a guide shaft slidably connected to the linear bearing embedded in the mounting holes, a circuit board and a driving member driving the bottom plate of the tray to move up and down so that the electrodes of the batteries in the battery tray contact and separate from the pin plate assembly to form the batteries. The pin board assembly includes a mounting board with pins arranged on the bottom surface of the mounting board and electrically connected with the pin board circuit board. The invention improves the efficiency of capacity dividing.

Proposed are a device and a method for inspecting an air void at a lead film of a battery to simply and accurately perform total inspection of a gap between a lead film and the lead tab boundary by using an OCT, wherein an object to be inspected in which the lead film is attached to a lead tab is conveyed through a conveying device, the conveyed object is gripped and loaded to an inspection position, the object is aligned to form an OCT focus on an interface between the lead tab and the lead film of the object, a gap inspection image between the lead tab and the lead film is obtained by scanning the interface between the lead tab and the lead film by using an OCT scanner above the inspection position, and the obtained gap inspection image is analyzed, thereby determining fusion quality of the lead film.

According to the metal foil fatigue test system and metal foil fatigue test method of the present invention, the fatigue degree and lifespan of the metal foil may be easily predicted by injecting gas into the tube of a roll structure and discharging the gas to simulate charge/discharge of the electrode assembly.

A deformation detection apparatus includes a cell movement-control assembly to handle a linear motion and a rotational motion of a battery cell, a body that supports the cell movement-control assembly, a digital micrometer, and control circuitry. The control circuitry controls a displacement of the battery cell between a first position and a second position along a longitudinal axis through a scanning region of the digital micrometer and a plurality of rotational positions of the battery cell at a plurality of charge states and a plurality of discharge states. The control circuitry measures a plurality of outer diameter values of the battery cell for a plurality of linear positions and a plurality of rotational positions along the longitudinal axis of the battery cell and determines a change in a geometrical shape (deformation and/or strain) of the battery cell for the plurality of linear positions and the plurality of rotational positions.

A forced discharge test apparatus includes a heating circuit; a discharge circuit; a temperature sensor; and a controller. When the controller receives a test command indicating a test resistance and a test temperature, the controller outputs a first control signal to the heating circuit to increase the temperature of a battery cell. The controller outputs a second control signal to the discharge circuit to discharge the battery cell when the temperature of the battery cell reaches the set test temperature. The controller determines that the test temperature is valid with respect to the test resistance when the temperature of the battery cell is equal to or lower than the upper temperature limit at a time point at which a predetermined heating time has passed from a time point when the first control signal is outputted.

A battery monitoring system, for monitoring condition of a plurality of batteries, includes first and second pluralities of battery testers each coupled to a storage battery stored at a respective first and second storage location The plurality of battery testers including test circuitry configured to test a storage battery and to generate test data, a memory configured to store battery tester identification information, and communication circuitry configured to transmit the test data and the identification information over a wireless communication medium. A gateway includes wireless communication circuitry configured to receive test data and battery tester identification information from the plurality of battery testers and further includes cloud communication circuitry configured to communicate the test data and battery tester identification information to a cloud facility The cloud facility includes communication circuitry configured to receive the test data from the gateway, a report output configured to report the test data, and a database which links battery tester identification information with battery tester location information.

A method for determining the state of an electric energy storage unit is described. An extension of the electrode assembly and/or a force exerted by the electrode assembly, and at least one electric variable of the electric energy storage unit are detected. A first and a second state variables, which represent the first state of the electric energy storage unit, are ascertained using the detected extension and/or the detected force and also a first mathematical model stored in a data memory and the detected at least one electric variable and also a second mathematical model stored in a data memory. This is followed by carrying out a first comparison of the first state variable with the second state variable. The first and/or the second mathematical model and/or the first and/or the second state variables are/is changed depending on the first comparison.

Discussed is an application that efficiently utilizes a vehicle battery by predicting performance of the vehicle battery and an available driving distance based on environmental condition of an area where a vehicle is parked and state information of the vehicle battery.