A method for adjusting an anode overvoltage of a lithium-ion battery (310) is described. A method for improving a capacity state of health of a lithium-ion battery (310) is described. A vehicle having at least one lithium-ion battery (310) whose anode overvoltage is adjusted using the method for adjusting the anode overvoltage of the lithium-ion battery (310) and/or whose capacity state of health is improved using the method for improving the capacity state of health of the lithium-ion battery (310) is described. A fleet management system that is designed to perform the method for adjusting the anode overvoltage of the lithium-ion battery (310) and/or the method for improving the capacity state of health of the lithium-ion battery (310) is described.

A wireless power receiver that receives power from a wireless power transmitter, the wireless power receiver including a communication unit configured to communicate with the wireless power transmitter; and a main controller, wherein the main controller generates a plurality of packets including a foreign object detection (FOD) status packet, wherein the communication unit transmits the FOD status packet to the wireless power transmitter, and the communication unit receives, from the wireless power transmitter, a response signal indicating whether a foreign object is present in a charging area of the wireless power transmitter, wherein the response signal is determined using a measured peak frequency of a power signal transmitted by the wireless power transmitter and a reference peak frequency included in the FOD status packet received from the wireless power receiver, and wherein the plurality of packets further include at least one of a signal strength packet, an end power transfer packet, a power control hold-off packet, a configuration packet, an identification packet for transmitting receiver identification information, an extended identification packet, a general request packet, a special request packet, a control error packet, a renegotiation packet, a 24-bit received power packet, an eight-bit received power packet, and a charging status packet.

An electronic device may include: a resonance circuit which comprises a battery, a coil and a capacitor, and receives power wirelessly; a rectifier which rectifies AC power, provided from the resonance circuit, to DC power; a DC/DC converter which converts and outputs the DC power provided from the rectifier; a charger which charges the battery by using the converted power provided from the DC/DC converter; a first OVP circuit which selectively connects the coil to the capacitor; a second OVP circuit which is connected in parallel to the first OVP circuit; a detection circuit which detects a rectified voltage; a control circuit; and a communication circuit, wherein the control circuit, on the basis that the detected rectified voltage is equal to or greater than a first threshold voltage, controls the first OVP circuit so as to be in an off state so that the coil is not connected to the capacitor, and on the basis that the detected rectified voltage is less than a second threshold voltage, controls the first OVP circuit so that the first OVP circuit is switched from the off state to an on state so that the coil is connected to the capacitor, wherein the second threshold voltage may be smaller than the first threshold voltage.

A charging system includes a charging input interface, an inductor, a first switch, a second switch, a first voltage acquisition circuit, and a control circuit. The charging input interface is connected to the inductor, which is connected to the first switch and the second switch. The second switch is configured for electrical connection with an energy storage power supply. The first voltage acquisition circuit is connected to the second switch and configured to detect the first voltage output by the charging system in real time. The control circuit cyclically controls the switch on/off time of the first switch based on the first voltage. During the charging process of the charging system, when the first voltage is less than the first preset voltage value, the control circuit controls the first switch to conduct and starts cyclic control. The state of the first switch is opposite to that of the second switch.

Provided are a charging circuit for a battery pack and a working system of a ship. The charging circuit includes a first switch circuit, a clamp gating circuit and a battery management circuit. The first switch circuit includes a first switch terminal, a second switch terminal and a switch control terminal. The clamp gating circuit includes a first clamp terminal, a second clamp terminal and at least one gating control terminal. The battery management circuit is configured to separately acquire charging voltages of multiple battery cells and a battery pack voltage between a first electrode and a second electrode in real time and control, according to the charging voltages and the battery pack voltage, a gating control signal supplied to each of the at least one gating control terminal and a switch control signal supplied to the switch control terminal.

A portable backup starting device for a vehicle includes an internal power source, a switching circuit, a first voltage detecting circuit, a first electrode clip, and a second electrode clip. The first electrode clip and the second electrode clip are configured to connect to a first end and a second end of a vehicle load; the internal power source has a first electrode and a second electrode. The first electrode is coupled to the first electrode clip, and the second electrode is coupled to the switching circuit; and the switching circuit is coupled to the second electrode clip. The first voltage detecting circuit is coupled to the switching circuit, the first electrode, and the second electrode.

A clamshell battery for a portable radio provides protection from excessive current for operation under HazLoc environments. Three loops of current protection are provided to protect two energy storage elements (cells and bulk capacitor). The first current loop blocks current from one cell pack from charging cells in another cell pack, and also constrains cell pack discharge current to be below a safety threshold. The second loop blocks a reverse current loop from the bulk capacitor to the cell pack, and constrains a high forward current loop from the cell pack to the bulk capacitor. The third loop blocks excessive forward current looping from bulk capacitor to the battery, and constrains high reverse current looping from radio device capacitors/load to the bulk capacitor.

A wireless rechargeable solid-state battery module includes a solid-state battery; internal structures that are provided with an internal circuit electrically connected with the solid-state battery; a barrier layer that isolates the solid-state battery from an outside air environment; and a positive electrode terminal and a negative electrode terminal each of which is electrically connected with the solid-state battery, is exposed on an outer surface, and is arranged so that the positive electrode terminal or the negative electrode terminal can be mounted on a mounting board. The internal circuit includes a wireless charging circuit that receives power from an outside via an electromagnetic field or a magnetic field produced by power transmission from the outside and controls charging to the solid-state battery.

A battery system includes a battery subpack having first and second battery cells, a cell monitoring circuit, a RF transmitter, an RF receiver, a subpack microprocessor, and a first transceiver. The circuit measures a voltage of a first battery cell. The system includes a master controller having a second transceiver. The RF transmitter sends a voltage value corresponding to the voltage of the first battery cell to the RF receiver. The subpack microprocessor determines the first battery cell has an overvoltage condition based on the voltage value and sends an overvoltage message to the master controller via the first and second transceivers. The subpack microprocessor induces first and second subpack contactors to each have an open operational state when the master controller sends an open command to the subpack microprocessor.

A method of receiving power by a wireless power receiver, the method including transmitting, to a wireless power transmitter, a plurality of packets including a foreign object detection (FOD) status packet; and receiving, from the wireless power transmitter, a response signal indicating whether a foreign object is present in a charging area of the wireless power transmitter, wherein the response signal is determined using a measured peak frequency of a power signal transmitted by the wireless power transmitter and a reference peak frequency included in the FOD status packet received from the wireless power receiver, and wherein the plurality of packets further include at least one of a signal strength packet, an end power transfer packet, a power control hold-off packet, a configuration packet, an identification packet for transmitting receiver identification information, an extended identification packet, a general request packet, a special request packet, a control error packet, a renegotiation packet, a 24-bit received power packet, an eight-bit received power packet, and a charging status packet.