A method for predicting an onset of a capacity fading in a battery includes measuring, over a period of time, a plurality of parameters related to charging and discharging cycles of the battery; detecting, based on the measured plurality of parameters, the onset of the capacity fade in the battery; and providing a notification on the electronic device indicating the detected onset of the capacity fade.

The present invention relates to an apparatus and a method capable of calculating insulation resistances and parasitic capacitances of a battery outside the battery. In the present invention, when a positive electrode connector and a negative electrode connector are coupled to a positive electrode terminal and a negative electrode terminal of the battery, respectively, and a ground connector is coupled to a case of the battery, even though the battery is positioned inside a chamber in order to perform a temperature test or the like of the battery, the insulation resistances and the parasitic capacitances of the battery may be calculated without needing to move the battery to the outside of the chamber. Accordingly, the insulation resistances and the parasitic capacitances of the battery may be conveniently calculated.

A reusable battery indicator includes a voltage sensor, a communication circuit communicatively connected to the voltage sensor, an antenna operatively coupled to the communication circuit, and a connector. The connector is electrically connected to the voltage sensor, and the connector is adapted to be removably connected to a battery, thereby providing an electrical connection between the voltage sensor and the battery. An electrical circuit is completed between the voltage sensor and the battery and the voltage sensor. The connection mechanism includes part of an electrical lock and key assembly.

Embodiments of the present disclosure provide a test system, a test method, and a test board for a charging device. The test board includes: a connecting circuit, configured to be connected to a charging device and a load module respectively, to form a test loop between the charging device and the load module through the connecting circuit; a first communication module, configured to communicate with an upper computer; a second communication module, configured to communicate with the charging device; and a control module, connected to the first communication module and the second communication module respectively, and configured to receive command information sent by the upper computer through the first communication module, and generate a test command according to the command information, to cause the test board or the charging device to execute the test command.

An apparatus and method for testing a battery pack are provided. Measurement components are configured to measure parameters of battery components (e.g., batteries and battery connection components) within the battery pack. Trained models are applied to signals measured by the measurement components and provide an output indicative of a condition of the battery components.

A method for quantitatively analyzing cohesive failure of an electrode analyzes cohesive failure of an electrode and includes preparing an electrode in which an electrode material mixture layer including an electrode active material, a conductive agent, and a binder is formed on a current collector, measuring shear strength (σ) data according to a cutting depth while cutting the electrode material mixture layer from a surface thereof until reaching the current collector using a surface and interfacial cutting analysis system (SAICAS), obtaining a regression curve of shear strength according to the cutting depth from the shear strength (σ) data, and determining a cutting depth, at which the shear strength is minimum in the regression curve, as a location of cohesive failure.

The present invention relates to a testing method for the thermal contact between a temperature sensor (50) and a battery cell (10) of a battery module (30), wherein the method comprises the steps of measuring a temperature T.sub.1 of the temperature sensor (50) at a time point t.sub.1, heating the temperature sensor (50) for a defined time (t.sub.2−t.sub.1), measuring a temperature T.sub.2 of the temperature sensor (50) at a time point t.sub.2 and/or a temperature T.sub.3 of the temperature sensor (50) at a time point t.sub.3, and determining the thermal contact between the temperature sensor (50) and the battery cell (10) based on at least one of the temperature differences ΔT.sub.2,1=(T.sub.2−T.sub.1), ΔT.sub.3,1=(T.sub.3−T.sub.1) and/or ΔT.sub.3,2=(T.sub.3−T.sub.2). The invention further relates to a testing circuit (60) for a temperature sensor (50) of a battery module (30), comprising a thermistor (61) with a first node (67) connected to a first supply voltage (65) and a second node (68) connected to ground (69), a switch (63) interconnected between the first node (67) of the thermistor (61) and a second supply voltage (66), and an analog-to-digital converter (64) connected in parallel to the thermistor (61). The invention further relates to a cell supervision circuit (40) for a battery module (30), comprising a circuit carrier (45), a testing circuit (60) according to any one of the claims 1 to 10, and a temperature sensor (50) surface mounted to the circuit carrier (45) and comprising a measuring head (51) with a thermistor (61) configured to be brought into thermal contact with a battery cell (10) of the battery module (30).

An ultrasonic scanning device includes at least one pair of cylindrical rollers. The axes of each pair of cylindrical rollers are parallel to each other. A liquid for transmitting the ultrasound is stored in each cylindrical roller. In use, a pair of cylindrical rollers rotate around their respective axes in reverse directions, the test subject passes between the pair of cylindrical rollers and is tested by ultrasound. The ultrasonic scanning device can be applied in the field of lithium-ion battery testing. The internal flaws and health status of the lithium-ion battery can be determined by acquiring an ultrasonic image in the test subject. The device of the present invention has a simple structure and an ingenious conception, and is ready-to-use and less expensive, which is successfully applied in the field of lithium-ion battery testing.

Provided is a casing for a lithium metal secondary battery including: a battery casing material; at least one releasable capsule attached at least partially or totally to the inner surface of the casing material to cover the inner surface of the casing material; and a release solution supported in the releasable capsule, wherein the releasable capsule includes a capsule coating film and a capsule inner space surrounded with the capsule coating film, the release solution is supported in the capsule inner space, and the release solution includes a release agent and a solvent. A lithium metal secondary battery including the casing and a method for manufacturing the same are also provided. It is possible to increase releasability of the negative electrode in a lithium metal secondary battery and to improve nail safety by using the releasable capsule according to the present disclosure.

A system and method for optimizing electrochemical cells including electrodes employing coordination compounds by mediating water content within a desired water content profile that includes sufficient coordinated water and reduces non-coordinated water below a desired target and with electrochemical cells including a coordination compound electrochemically active in one or more electrodes, with an improvement in electrochemical cell manufacture that relaxes standards for water content of electrochemical cells having one or more electrodes including one or more such transition metal cyanide coordination compounds.