Example methods and apparatuses for detecting lithium plating and obtaining a polarization proportion are provided. One example method includes obtaining an open-circuit voltage of a rechargeable battery and a negative electrode open-circuit voltage of the rechargeable battery based on a state of charge of the rechargeable battery. A negative electrode polarization voltage of the rechargeable battery is obtained based on the open-circuit voltage, a terminal voltage of the rechargeable battery, and a polarization proportion of the rechargeable battery. A negative electrode voltage of the rechargeable battery is obtained based on the negative electrode open-circuit voltage and the negative electrode polarization voltage. It is determined, based on the negative electrode voltage, whether lithium plating occurs in the rechargeable battery.

The present disclosure relates to a battery test system for a vehicle that includes a camera configured to capture an image of a vehicle identification number located on the vehicle, the camera being coupled to a processor which determines characters of the vehicle identification number from the image of the camera and correlates the characters of the vehicle identification number to a vehicle identification number database to receive battery parameters for the vehicle, a battery tester that is removably connected to terminals of a battery of the vehicle and configured to receive battery test results, and a display which conveys information relating to the battery parameters and the battery test results.

The present disclosure relates to a battery test system for a vehicle that includes a camera configured to capture an image of a vehicle identification number located on the vehicle, the camera being coupled to a processor which determines characters of the vehicle identification number from the image of the camera and correlates the characters of the vehicle identification number to a vehicle identification number database to receive battery parameters for the vehicle, a battery tester that is removably connected to terminals of a battery of the vehicle and configured to receive battery test results, and a display which conveys information relating to the battery parameters and the battery test results.

A battery charging method based on lithium plating detection includes: acquiring a battery charging strategy table after receiving a battery charging instruction; charging a battery according to a charging current in the battery charging strategy table, and performing at least one charging lithium plating detection on the battery during the charging of the battery, to obtain a first lithium plating detection result; continuing the charging of the battery according to the charging current and the charging lithium plating detection of the battery when no lithium plating phenomenon occurs, and stopping the charging lithium plating detection when the lithium plating phenomenon occurs or the charging of the battery is completed; and updating the charging current according to a preset first current reduction strategy when the lithium plating phenomenon occurs, and continuing the charging of the battery according to the updated charging current until the charging is completed.

A monitor circuit for use in a management system with modular subsystems includes: a sensor configured to measure parameter values of a monitored electrical component as a function of time; and storage coupled to the sensor and configured to store the parameter values. The monitor circuit also includes frame preparation circuitry coupled to the storage and configured to prepare frames that include the parameter values, wherein the prepared frames vary in length as a function of time.

A monitor circuit for use in a management system with modular subsystems includes: a sensor configured to measure parameter values of a monitored electrical component as a function of time; and storage coupled to the sensor and configured to store the parameter values. The monitor circuit also includes frame preparation circuitry coupled to the storage and configured to prepare frames that include the parameter values, wherein the prepared frames vary in length as a function of time.

A method for detecting a lithium plating state of a battery includes regularly collecting a voltage of a battery after the end of charging at a preset time interval after the battery is in an idle state, and associatively storing the collected voltage and a collection time as voltage data; constructing a time-differential voltage curve in a voltage-time coordinate system according to the voltage data; detecting whether a characteristic peak voltage exists in the time-differential voltage curve; and sending a warning message when detecting that the characteristic peak voltage exists in the time-differential voltage curve.

A deterioration estimation apparatus includes a storage processing unit and a calculation unit. The storage processing unit acquires a plurality of models from a model generation apparatus, and stores the models in a model storage unit. A plurality of models are generated by performing machine-learning on training data, the training data using, as input values, measurement data for training indicating a result of measuring a state of a storage battery when the number of charge and discharge times is α.sub.i to α.sub.j (where j≥i), and using, as a target value, SOH indicating a deterioration state of the storage battery when the number of charge and discharge times is β (where β>α.sub.j). The calculation unit uses a plurality of models stored in a model storage unit to calculate an estimation result of transition of SOH of a storage battery managed by the deterioration estimation apparatus.

A deterioration estimation apparatus includes a storage processing unit and a calculation unit. The storage processing unit acquires a plurality of models from a model generation apparatus, and stores the models in a model storage unit. A plurality of models are generated by performing machine-learning on training data, the training data using, as input values, measurement data for training indicating a result of measuring a state of a storage battery when the number of charge and discharge times is α.sub.i to α.sub.j (where j≥i), and using, as a target value, SOH indicating a deterioration state of the storage battery when the number of charge and discharge times is β (where β>α.sub.j). The calculation unit uses a plurality of models stored in a model storage unit to calculate an estimation result of transition of SOH of a storage battery managed by the deterioration estimation apparatus.

The present invention comprises semiconductor materials for use in rechargeable energy storage devices particularly rechargeable secondary lithium batteries or lithium-ion batteries (LIBs) as monitoring sensors at the sub-cell level. The present invention includes semiconductor materials compositions fabricated from silicon-based, gallium-based, germanium-based, or a variety of other semiconductor materials as well as implementation methods related thereto. The aforementioned system can be embedded in the structure of negative and positive electrodes, at the interface of electrodes and electrolyte and/or at the interface of electrodes and current collector. The use of semiconductor materials proposed in this invention results in more accurate performance assessment, improved battery state of health monitoring, enhanced battery safety, and extended battery life.