Abstract: Embodiments of the present application provide a method for detecting lithium precipitation of a battery and a related apparatus. The method may include: acquiring pressure data of a predetermined position of the battery; and detecting lithium precipitation of the battery according to the pressure data and reference pressure data, the pressure data including actually measured pressure data of the battery, and the reference pressure data including pressure data related to a predetermined amount of lithium precipitation of the battery under a predetermined condition.

Abstract: The disclosure relates to battery technology and provides a positive electrode plate, its preparation method, an electrode assembly, a battery cell, a battery, and an electric apparatus. The positive electrode plate includes a current collector and a coating applied to at least one side of the current collector. A protective film containing a fluoride material is formed on the surface of the coating. The film reduces exposure of the positive electrode material to air, which otherwise degrades performance, and limits direct contact with electrolytes, which may cause interfacial side reactions. By mitigating these effects, the protective film enhances the chemical stability of the electrode material and improves overall battery performance.

Abstract: A battery cell includes a shell, an electrode assembly, a first processor, a detection sensor, and a second processor. The electrode assembly is arranged inside the shell. The first processor is arranged inside the shell. The detection sensor is arranged inside the shell and is electrically connected to the first processor via first communication lines. The second processor is arranged outside the shell and is electrically connected to the first processor via second communication lines. A quantity of the second communication lines is less than a quantity of the first communication lines.

Abstract: A pressure sensor including an electrode layer and a sensitive layer. The sensitive layer is provided with at least two types of protrusion structures of different heights. Each type of the protrusion structure includes at least one protrusion. Each protrusion is located on a side of a base layer facing the electrode layer, and the area of contact between each protrusion and the electrode layer is configured to vary with changes in pressure applied to the electrode layer. In this way, the pressure sensor can adapt to detection environments under various pressures, thereby effectively increasing the detection range of the pressure sensor and improving the detection sensitivity of the pressure sensor. Further provided is a battery cell and an electrical device.

Abstract: The conductive material includes a flexible substrate and conductive particles dispersed in the flexible substrate, wherein the conductive particles comprise a temperature rise material and a temperature drop material, the temperature rise material is a material having a resistivity that increases as the temperature rises, the temperature drop material is a material having a resistivity that decreases as the temperature rises, and the ratio of the temperature drop material to the temperature rise material is set so that within a temperature range of ?40° C. to +200° C., the absolute value of the change rate of the resistivity of the conductive material is less than or equal to 0.01. By mixing the temperature rise material and the temperature drop material, the resistivity of the mixed material does not change significantly when the temperature changes, such that the detection sensitivity of a sensor at different temperatures is improved.

Abstract: A battery pack includes: a cell module, including at least one cell; a first collection module, including at least one first collection unit, the first collection unit being disposed within the cell, and being configured to collect first operational data of the cell; a data processing module, connected to the first collection unit, configured to perform thermal runaway detection on the cell based on the first operational data to obtain a first detection result; a second collection module, disposed outside the cell module, configured to be activated when the first detection result indicates that any one of the cell has a thermal runaway risk, and collect second operational data of the cell after activation; the data processing module is further connected to the second collection module, and further configured to perform secondary detection based on the second operational data to determine whether the cell has a thermal runaway risk.

Abstract: Embodiments of the present application provide a method for detecting lithium precipitation of a battery and a related apparatus. The method may include: acquiring pressure data of a predetermined position of the battery; and detecting lithium precipitation of the battery according to the pressure data and reference pressure data, the pressure data including actually measured pressure data of the battery, and the reference pressure data including pressure data related to a predetermined amount of lithium precipitation of the battery under a predetermined condition.

Abstract: The present disclosure discloses application of a deep eutectic solvent in textile dyeing, belonging to the technical field of ecological dyeing and finishing of textiles. A natural hydrophobic deep eutectic solvent system (HDES) is first used as a dyeing medium to perform reactive dyeing on cotton. Firstly, the prepared natural hydrophobic deep eutectic solvent is mixed with a small amount of dye aqueous solution at high speed to prepare dye liquor, and then cotton fabric soaked with alkali liquor is put into a dye bath for dyeing. The dyeing method doesn't require addition of inorganic salts and other dyeing auxiliaries, but uses a small amount of water and alkali agent to achieve the same dyeing effect as traditional water bath, and the dyeing medium is safe and environment-friendly. After dyeing, cyclic dyeing can be achieved by simply separating the dye bath, which truly realizes green dyeing of reactive dyes.

Abstract: A battery pack includes a cell module including at least one cell, a first collecting module including at least one first collecting unit arranged in the cell and configured to collect first operation data of the cell, and a data processing module connected with the first collecting unit and configured to perform a thermal runaway detection on the cell based on the first operation data to obtain a first detection result.

Abstract: Disclosed are a battery cell self-discharge current detection method, apparatus, and device, and a computer storage medium. The method includes: controlling a constant voltage source to start charging a battery cell at a first moment, and acquiring a first rate of change of a target current over time in a first preset duration after the first moment; controlling, in the case where the first rate of change is greater than a first threshold value, a constant current source and the constant voltage source to charge the battery cell; acquiring, in the case of reaching a second moment, a second rate of change of the target current over time in a second preset duration after the second moment, wherein the second moment is a moment when the time for charging the battery cell using the constant current source and the constant voltage source reaches a third preset duration; and determining.

Abstract: Disclosed are a battery cell self-discharge current detection method, apparatus, and device, and a computer storage medium. The method includes: controlling a constant voltage source to start charging a battery cell at a first moment, and acquiring a first rate of change of a target current over time in a first preset duration after the first moment; controlling, in the case where the first rate of change is greater than a first threshold value, a constant current source and the constant voltage source to charge the battery cell; acquiring, in the case of reaching a second moment, a second rate of change of the target current over time in a second preset duration after the second moment, wherein the second moment is a moment when the time for charging the battery cell using the constant current source and the constant voltage source reaches a third preset duration; and determining.

Abstract: A battery detection method and apparatus are provided. The battery detection apparatus includes: a voltage measurement module, configured to connect to a battery to be tested, and measure an open-circuit voltage of the battery to be tested; a processor, configured to obtain the open-circuit voltage; a constant voltage source, configured to input a test voltage to the battery to be tested under control of the processor after the battery to be tested stands for a preset time, the test voltage is the same as the open-circuit voltage; and a current measurement module, configured to measure an instantaneous current of the battery to be tested after the test voltage is inputted. The processor is also configured to obtain the instantaneous current and determine the self-discharge characteristic of the battery to be tested according to the instantaneous current and a preset current threshold.

Abstract: The present disclosure discloses application of a deep eutectic solvent in textile dyeing, belonging to the technical field of ecological dyeing and finishing of textiles. A natural hydrophobic deep eutectic solvent system (HDES) is first used as a dyeing medium to perform reactive dyeing on cotton. Firstly, the prepared natural hydrophobic deep eutectic solvent is mixed with a small amount of dye aqueous solution at high speed to prepare dye liquor, and then cotton fabric soaked with alkali liquor is put into a dye bath for dyeing. The dyeing method doesn't require addition of inorganic salts and other dyeing auxiliaries, but uses a small amount of water and alkali agent to achieve the same dyeing effect as traditional water bath, and the dyeing medium is safe and environment-friendly. After dyeing, cyclic dyeing can be achieved by simply separating the dye bath, which truly realizes green dyeing of reactive dyes.

Abstract: The present application discloses a method, apparatus, device and medium for estimating performance parameters of a battery. The method for estimating performance parameters of a battery includes: generating a first curve segment to be calibrated during a process of adjusting a battery capacity in a first capacity interval with a first capacity value as an endpoint value; determining, in a preset reference curve, a first target curve segment that matches the first curve segment to be calibrated; determining a SOC interval corresponding to the first target curve segment as a SOC interval of the first curve segment to be calibrated; and estimating the performance parameters of the battery based on the SOC interval of the first curve segment to be calibrated, the performance parameters include a current SOC and/or a current battery capacity.

Abstract: The present application discloses a method, apparatus, device and medium for estimating performance parameters of a battery. The method for estimating performance parameters of a battery includes: generating a first curve segment to be calibrated during a process of adjusting a battery capacity in a first capacity interval with a first capacity value as an endpoint value; determining, in a preset reference curve, a first target curve segment that matches the first curve segment to be calibrated; determining a SOC interval corresponding to the first target curve segment as a SOC interval of the first curve segment to be calibrated; and estimating the performance parameters of the battery based on the SOC interval of the first curve segment to be calibrated, the performance parameters include a current SOC and/or a current battery capacity.