The present disclosure provides a power circuit for a battery powered wearable device. The circuit may include a first switch and a second switch successively coupled between the battery of the wearable device and a power output terminal of the power circuit. The circuit may further include a control unit configured to receive a detection signal indicating that a power switch is switched off, and send, after completing required data processing before the wearable device is powered off based on the detection signal, a first control signal to the first switch, to control the first switch to be switched off and cause the second switch to be switched off, thereby cutting off power supply of the battery via the power output terminal.

The present disclosure provides a power circuit for a battery powered wearable device. The circuit may include a first switch and a second switch successively coupled between the battery of the wearable device and a power output terminal of the power circuit. The circuit may further include a control unit configured to receive a detection signal indicating that a power switch is switched off, and send, after completing required data processing before the wearable device is powered off based on the detection signal, a first control signal to the first switch, to control the first switch to be switched off and cause the second switch to be switched off, thereby cutting off power supply of the battery via the power output terminal.

Provided are a method and a system for optimizing a BMS model. The method includes: creating a BMS model based on test data of a battery; selecting sample vehicles from real driving data of vehicles equipped with this type of battery through active learning approach, and giving a corresponding weight to each of the selected sample vehicles; optimizing the BMS model based on the data of the selected sample vehicles.

Provided are a method and a system for optimizing a BMS model. The method includes: creating a BMS model based on test data of a battery; selecting sample vehicles from real driving data of vehicles equipped with this type of battery through active learning approach, and giving a corresponding weight to each of the selected sample vehicles; optimizing the BMS model based on the data of the selected sample vehicles.

An apparatus and method for measuring temperature of a battery, which may effectively measure a temperature of a secondary battery. The apparatus measures a temperature of a secondary battery at an integrated circuit board configured to contact an electrode lead of the secondary battery, and includes a lead connector mounted on the integrated circuit board and configured such that the electrode lead is connected thereto, a temperature sensor mounted on the integrated circuit board and configured to receive an operation power from the secondary battery as a first terminal provided at one end thereof among a plurality of terminals included therein is in direct contact with the lead connector, and a calculating unit electrically connected to the temperature sensor and configured to measure the temperature of the secondary battery based on an electric signal measured by the temperature sensor.

An apparatus and method for measuring temperature of a battery, which may effectively measure a temperature of a secondary battery. The apparatus measures a temperature of a secondary battery at an integrated circuit board configured to contact an electrode lead of the secondary battery, and includes a lead connector mounted on the integrated circuit board and configured such that the electrode lead is connected thereto, a temperature sensor mounted on the integrated circuit board and configured to receive an operation power from the secondary battery as a first terminal provided at one end thereof among a plurality of terminals included therein is in direct contact with the lead connector, and a calculating unit electrically connected to the temperature sensor and configured to measure the temperature of the secondary battery based on an electric signal measured by the temperature sensor.

Battery management systems and methods can provide real-time automated monitoring of various aspects of battery health and operation. Some battery management systems can use an equivalent cell circuit model to predict a range for the expected behavior of a battery cell under actual operating conditions in real-time. The prediction can be compared to the actual behavior of the cell to determine whether an anomaly exists. Some battery management systems can maintain an estimate of battery state-of-health parameters such as charge capacity and internal resistance and can update these estimates in real time while the battery is being discharged and/or charged. Anomalous variations in a monitored parameter can trigger a real-time fault notification.

An energy storage system includes a control apparatus and one or more battery sub-arrays. Each battery sub-array includes one or more energy storage racks. Each energy storage rack includes one or more battery packs. The control apparatus is configured to: determine that parameter calibration needs to be performed on a first energy storage rack in a first battery sub-array; when the first energy storage rack meets a preset condition, increase a weight of the first energy storage rack in the first battery sub-array; and after each battery pack in the first energy storage rack is fully charged or remaining power of the battery pack is fully discharged, perform calibration on a parameter of the battery pack.

An energy storage system includes a control apparatus and one or more battery sub-arrays. Each battery sub-array includes one or more energy storage racks. Each energy storage rack includes one or more battery packs. The control apparatus is configured to: determine that parameter calibration needs to be performed on a first energy storage rack in a first battery sub-array; when the first energy storage rack meets a preset condition, increase a weight of the first energy storage rack in the first battery sub-array; and after each battery pack in the first energy storage rack is fully charged or remaining power of the battery pack is fully discharged, perform calibration on a parameter of the battery pack.

A current measurement apparatus configured to quickly block current. The current measurement apparatus includes a first terminal, a second terminal, a resistor interposed in a separated space between the first terminal and the second terminal; a circuit board, a control unit mounted on the circuit board and configured to measure a current flowing in the resistor by using a voltage value between the first terminal and the second terminal and a resistance value of the resistor, and a cutting unit located above or below the resistor and configured to cut the resistor according to a control signal of the control unit.