A vehicle includes an electrical component electrically connected to a transmission path of supply electric power, a temperature sensor configured to detect a temperature of the electrical component, a control device configured to suppress the supply electric power when the temperature detected by the temperature sensor is equal to or higher than a threshold temperature, as compared with a case where the temperature detected by the temperature sensor is lower than the threshold temperature. The control device is configured to lower the threshold temperature when the external charging is executed again after the external charging is stopped, as compared with a case before the external charging is stopped.

An electrical combination. The electrical combination comprises a battery pack configured to be interfaced with a hand held power tool, a control component, and a semiconducting switch. The transfer of power from the battery pack to the hand held power tool is controlled by the control component and the switch based on one of a battery pack state of charge and a respective state of charge of one of a plurality of battery cells. A discharge current of the battery pack is regulated based on the switch being controlled into one of a first state and a second state by the control component to selectively enable the transfer power from the plurality of battery cells to the hand held power tool.

The disclosed computer-implemented method may include (i) detecting a battery condition of a wearable battery-operated device that indicates a threat to a battery's health and (ii) in response to detecting the battery condition, performing a battery-protection action by initiating a reverse power flow across a bidirectional connection from the wearable battery-operated device to a portable charging case that is designed to charge the wearable battery-operated device. Various other methods, systems, and computer-readable media are also disclosed.

The present application provides a charging policy setting method and apparatus, relating to the field of batteries. The method includes, obtaining a plurality of different core working parameters upon charging of a target core under a target charging condition at a target charging rate corresponding to the target charging condition; determining a maximum charging rate corresponding to each charging duration under the target charging condition according to the plurality of different core working parameters; and setting a charging policy under the target charging condition according to each charging duration under the target charging condition and the maximum charging rate corresponding to each charging duration. Thus, when the target core is charged at the set charging policy for each charging duration under the target charging condition, the target core is charged at the maximum charging rate corresponding to the charging duration, ensuring a fast charging speed and a high charging efficiency.

Devices and methods described herein facilitate rapid wireless recharging, while reducing risk of injury, damage, or discomfort caused by heat generated during recharging. The embodiments described herein are useful in a variety of context, including for IoT devices, personal electronics, electric vehicles, and medical devices, among others.

An apparatus including a control unit operably coupled to a voltage measuring unit, a temperature measuring unit and a discharging switch. The control unit measures a cell voltage and a cell temperature by using the voltage measuring unit and the temperature measuring unit, turns on the discharging switch to forcibly discharge the secondary battery through a load resistor when it is determined that a state where the cell voltage and the cell temperature are respectively equal to or greater than a critical voltage and a critical temperature according to a preset swelling management condition continues over a reference time, and turns off the discharging switch when a cell voltage or a cell temperature measured during the forced discharge falls below a preset safe voltage or a preset safe temperature according to the swelling management condition.

The testing method disclosed herein tests the thermal propagation occurred in the assembled battery. The testing method includes: calculating a reference voltage value V.sub.S based on the voltages of the single batteries; testing thermal propagation based on the reference voltage value V.sub.S and the voltages of the single batteries. In the testing, if a first voltage difference (V.sub.S−V.sub.1) between a voltage V.sub.1 of a predetermined first single battery and the reference voltage value V.sub.S is a first threshold value V.sub.T1 or more, and a second voltage difference (V.sub.S−V.sub.2) between a voltage V.sub.2 of a second single battery adjacent to the first single battery and the reference voltage value V.sub.S is a second threshold value V.sub.T2 or more, it is determined that the thermal propagation is occurring. According to such a testing method, the thermal propagation occurred can be detected accurately in an early stage.

A method for the open-loop and closed-loop control of a power tool with at least one rechargeable battery, a drive and at least one control device, the rechargeable battery serving as an energy supply for the power tool. The method includes the method steps of: recording at least one temperature value of the rechargeable battery by a temperature measuring device; recording at least one first voltage value of the rechargeable battery by a voltage measuring device; and setting a first performance parameter value of the power tool to a second performance parameter value of the power tool for setting a current intensity value if the recorded temperature value corresponds to a predetermined temperature threshold value and the recorded voltage value corresponds to a predetermined voltage threshold value. A system including a power tool and at least one rechargeable battery for supplying the power tool with electrical energy for carrying out the method.

A vehicle, system and method for monitoring an occurrence of thermal runaway in a battery pack of the vehicle. The system includes a plurality of voltage sensors and a processor. The plurality of voltage sensors obtains a plurality of voltage measurements at each of a plurality of battery cells of the battery pack. The processor is configured to determine a mean value based on the plurality of voltage measurements, compare a voltage measurement obtained from a selected battery cell to the mean value, and generate a notification signal when a difference between the voltage measurement from the selected battery cell and the mean value is greater than or equal to a prognostic threshold.

A power tool system including a battery pack and a power tool. The power tool includes a power tool housing, a drive unit located within the housing, and a power tool controller located within the housing. The power tool controller is configured to receive a signal from the battery pack (for example, a battery pack controller), the signal indicative of a temperature (for example, a temperature of the battery pack); determine whether the temperature is between a lower temperature threshold and an upper temperature threshold; and limit a power to a drive unit if the temperature is between the lower temperature threshold and the upper temperature threshold.