Various example embodiments of the present disclosure disclose a method and an apparatus for protecting a battery in an electronic device. According to various example embodiments of the present disclosure, the electronic device includes: a battery configured to supply power to the electronic device; a timer configured to maintain time information of the electronic device; a thermistor configured to measure a temperature of the battery; and a processor electrically connected with the battery, the timer, and the thermistor, and the processor is configured to: determine a state of the battery when the electronic device is powered off; cause the electronic device to enter a suspend mode to protect the battery based on a result of the determining; be woken up by the timer in a sleep state accompanied by entering of the suspend mode, and acquire state information of the battery; and perform a function related to battery protection of the battery based on the acquired state information.

A handheld device for jump starting a vehicle engine includes a rechargeable lithium ion battery pack (32) and a microcontroller (1). The lithium ion battery is coupled to a power output port of the device through a power switch circuit (15) actuated by the microcontroller. A vehicle battery isolation sensor (12) connected in circuit with positive and negative polarity outputs detects the presence of a vehicle battery (72) connected between the positive and negative polarity outputs. A reverse polarity sensor (10) connected in circuit with the positive and negative polarity outputs detects the polarity of a vehicle battery connected between the positive and negative polarity outputs, such that the microcontroller will enable power to be delivered from the lithium ion power pack to the output port only when a good battery is connected to the output port and only when the battery is connected with proper polarity of positive and negative terminals.

Methods and systems are described for using detection coils to detect metallic or conductive foreign objects that can interfere with the wireless transfer of power from a power transmitter to a power receiver. In particular, the detection coils are targeted to foreign objects that are smaller than a power transmitter coil in the power transmitter.

In general, this disclosure includes systems, methods, and techniques for inducing electrical current through one or more battery banks. For example, a circuit may include a switching element. The circuit may be configured to draw, using the switching element, a current from a first battery bank when the switching element is turned on, the first battery bank emitting an excess current after the switching element is turned off, where the current increases a temperature of the first battery bank. Additionally, the circuit may be configured to deliver at least some of the excess current to a second battery bank when the switching element is turned off, where the excess current charges the second battery bank, and where the excess current increases a temperature of the second battery bank.

A battery pack charger includes a first circuit region, a second circuit region, an input voltage measuring circuit, a temperature measurement device, and a controller. The controller is configured to measure an input voltage to the charger using the input voltage measuring circuit, measure a temperature of the second circuit region using the temperature measurement device, and estimate a temperature of the first circuit region based on the input voltage to the charger and the measured temperature of the second circuit region. The controller is further configured to select one of a plurality of correlations between the temperature of the second circuit region and the temperature of the first circuit region based on the input voltage to the charger to estimate the temperature of the first circuit region. After the temperature of the first circuit region has been estimated, one or more control operations associated with the charger can be performed.

A switch system includes a system main relay, a temperature measuring unit, and a controller. The system main relay is configured to electrically connect a battery and an onboard device to each other by turning on a contact point, and to electrically disconnect the battery and the onboard device by turning off the contact point. The temperature measuring unit is configured to measure temperature of the contact point of the system main relay. The controller is configured to cause the system main relay to repeatedly turn on and off the contact point at a predetermined timing, (i) when the temperature of the contact point of the system main relay is a predetermined temperature or more or (ii) when an amount of rise in the temperature of the contact point is a predetermined amount or more.

A system includes: a robotic charging connector including: a temperature sensor configured to measure temperature data; a processor operably connected to the temperature sensor, the processor configured to use the temperature data to determine an appropriate charging current, wherein the processor is further configured to send an alert upon occurrence of a triggering condition; and a computer operably connected to the processor, the computer configured to control the robotic charging connector, the computer further configured to receive the alert. A method for detecting the condition of a robotic charging connector includes: receiving, by a processor from a temperature sensor to which the processor is operably connected, the temperature sensor configured to measure a temperature of the robotic charging connector, temperature data; determining, by the processor, based on the temperature data, that a triggering condition has occurred; and sending, by the processor, to a computer, notification regarding the triggering condition.

A battery maintenance device for performing maintenance on a battery pack of an automotive vehicle powered by the battery pack includes communication circuitry configured to retrieve information related to condition of batteries/cells of the battery pack obtained using sensors in the battery pack. Measurement circuitry couples to batteries/cells of the battery pack and obtains measurement information related to a measured condition of batteries/cells of the battery pack. A controller verifies operation of the sensors in the battery pack by comparing the retrieved information with the measurement and provides a comparison output. Output circuitry outputs an indication of a failing sensor in the battery pack based upon the comparison output.

Supply device for providing electrical energy to a consumer electrical circuit, containing a protection and monitoring device (50) assigned individually to the consumer, to the output of which the consumer electrical circuit can be connected via connecting means (10), wherein the protection and monitoring device (50) has sensor means (31, 32) for detecting at least one electrical quantity, and an analysis device (52) controlled by the sensor means (31, 32), which contains parameterization means for specifying in a predefinable manner at least one safety relevant triggering criterion, wherein on the at least one safety relevant triggering criterion being reached, a switching device (54) for the consumer electrical circuit can be controlled.

A battery-protecting apparatus is electrically connected to a secondary battery, a generator and a load unit of a vehicle. The generator provides electricity to the battery via the battery-protecting apparatus. The battery provides electricity to the load unit via the battery-protecting apparatus. The battery-protecting apparatus includes a detection unit, a switch, a processor, a controlling unit, a discharging loop, a wireless communication unit and a security loop.