10results about "Battery overvoltage protection" patented technology

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.

A first overvoltage protection OVP threshold is set for the electronic device, and when a voltage of a battery is greater than the first OVP threshold, a power supply module is controlled not to supply power to a load; the power supply module is controlled not to charge a battery in a battery module; and the battery in the battery module is controlled to supply power to the load until the voltage of the battery is always less than a second OVP threshold in preset duration, where the second OVP threshold is less than the first OVP threshold.

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.

A charging apparatus includes a sampling module, a control module, a clamping module, and a switched capacitor module. The sampling module is configured to connect to a battery, collect current status information of the battery, and provide collected status information for the control module; the control module is configured to adjust output energy of the clamping module based on the status information, and provide a drive signal for the switched capacitor module, the clamping module is configured to connect to a power supply, receive power supply energy provided by the power supply, process the power supply energy into output energy, and provide the output energy for the switched capacitor module, and the switched capacitor module is configured to provide charging energy for the battery based on the drive signal provided by the control module and the output energy provided by the clamping module.

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.

A mobile lighting system to integrate multiple power sources into a unified platform for portable, uninterrupted illumination. In various embodiments, the system includes a light source, an AC socket connector, internal rechargeable batteries, and external battery packs to thermally isolate high-temperature LED zones from power storage to reduce risk of thermal runaway. External interfaces include a USB Power Delivery port enabling bidirectional power transfer, dynamic role switching between source and sink, and data communication with mobile devices. Solar panel input may supplement charging. Intelligent switching logic, executed by stored instructions in a controller, manages transitions between AC, internal, and external power sources based on sensor-detected availability, charge levels, and user-defined priorities. Modular features include an on-device manual switch for on / off and dimming control, hot-swappable batteries, and real-time control and diagnostics through visual indicators or a connected application.

An intelligent rechargeable battery pack having a battery management system for monitoring and controlling the charging and discharging of the battery pack is described. The battery management system includes a memory for storing data related to the operation of the battery, and the battery management system is also configured to communicate the data related to the operation of the battery to other processors for analysis.

A pack for containing and recharging an e-cigarette includes: a re-chargeable pack battery; a first connector which is electrically connectable to an external power source; a first recharging mechanism for re-charging the pack battery using the external power source when the first connector is electrically connected to the external power source; a second connector which is electrically connectable to an e-cigarette contained within the pack; and a second recharging mechanism for re-charging the e-cigarette when the e-cigarette is electrically connected to the second connector. The first recharging mechanism includes a first protection circuit module and the second re-charging mechanism includes a second protection circuit module, wherein the protection modules protect the pack and e-cigarette against excessive voltage or current during re-charging.

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.

The present disclosure provides a charging circuit capable of operating stably under a charging current of a wide range. A first transistor is connected between an input terminal and an output terminal. A current setting terminal is connected to an external current setting resistor. A second transistor is connected between the input terminal and the current setting terminal, and has a gate connected to a gate of the first transistor. A constant current feedback circuit feedback-controls a gate voltage of the first transistor in a manner that a voltage of the current setting terminal approaches a reference voltage. The constant current feedback circuit is configured in a manner that a phase compensation parameter is variable according to a current flowing through the first transistor.