A charging-discharging device for secondary battery and a secondary battery activation process device are provided. The charging-discharging device of the present invention includes a box-type body including two open parts formed at lateral surfaces thereof; charging-discharging terminals disposed on lateral surfaces of the body; a nonflammable blocking means for opening or closing the open parts at the lateral surfaces; an air conditioning line connected to the inside of the body to individually control the temperature of each charging-discharging device; and/or a CO 2 supply line for spraying carbon dioxide inside the body when a fire occurs. It is possible to uniformly control and manage the internal temperature of the charging-discharging device for performing an activation process of a secondary battery, and when a fire occurs, the fire can be immediately and efficiently extinguished and prevented from spreading to the outside.

Provided are a battery pack and an electrical apparatus by which information can be transmitted at an appropriate timing from the battery pack to a device body. A battery pack (10) includes: a serial communication reception circuit (31) and a temperature information transmission circuit (32); an LS terminal that is selectively connected to the serial communication reception circuit (31) or the temperature information transmission circuit (32); a first switching circuit (21) that is provided between the LS terminal and the serial communication reception circuit (31) and the temperature information transmission circuit (32); and a V terminal that is connected to the first switching circuit (21). The first switching circuit (21) switches between connecting the serial communication reception circuit (31) or the temperature information transmission circuit (32) to the LS terminal according to a signal inputted from the V terminal.

A method of protecting a supercapacitor module of a vehicle contains steps of: A) installing; B) judging; C) executing a protection mode; and D) executing an operating mode. In the step A), an open circuit remains between the rechargeable battery and the supercapacitor module, and a voltage value of the supercapacitor module is 0. In the step B) the supercapacitor module is judged whether being satisfied with a protection condition, an external voltage is V1, a fully charging voltage of the supercapacitor module is V2, an ambient temperature value of the supercapacitor module is T1, and a safe temperature value of a respective supercapacitor is T2. In the step C), when the supercapacitor module is satisfied with the protection condition, the protection mode is executed. In the step D), when a connection circuit between the supercapacitor module and the rechargeable battery occurs, the supercapacitor module is rechargeable and dischargeable electrically.

A wireless charging mouse and a method of charging the same are provided. The wireless charging mouse includes a first wireless power receiver, a second wireless power receiver, a conversion circuit, and a control circuit. The first wireless power receiver has a first wireless charging circuit, and the first wireless power receiver receives a wireless power supply of a first wireless power supply unit. The second wireless power receiver has a second wireless charging circuit, and the second wireless power receiver receives a wireless power supply of a second wireless power supply unit. The control circuit outputs a control signal to the conversion circuit according to the power status information received from the first wireless power receiver and the second wireless power receiver by the conversion circuit. The control circuit selectively receives at least one of the first power and the second power according to the control signal.

A battery device with a C-rate of 1 C includes a battery cell, a protection chip, and a microcontroller. The protection chip is electrically connected to the battery cell, determines whether to activate the protection mechanism of the battery device according to the state of the battery cell. The microcontroller is electrically connected to the protection chip, detects the RSOC of the battery cell. When an external power supply is electrically coupled to the battery device, and the RSOC of the battery cell is lower than 50%, the microcontroller controls the battery cell to perform a fast charging not over 10 minutes. During the 10 minutes of fast charging, the protection chip activates the protection mechanism, or the microcontroller detects that the battery cell has changed from a CC state to a CV state, the microcontroller stops the fast charging and restores the C-rate of the battery cell to 1 C.

An example may include a battery cell and a controller configured to control charging of the battery cell, using a charging switch. The controller may be configured to adjust a charging current supplied to the battery cell by controlling the charging switch to prevent a voltage of a load from being less than a reference voltage when a voltage of the battery cell is equal to or less than the reference voltage while power is being supplied to the battery pack and the load connected to the battery pack.

This application is directed to an electronic device powered by one or more rechargeable battery cells. The electronic device includes a first negative temperature coefficient (NTC) thermistor proximate to the battery cells, and an open capacitor coupled in parallel with the NTC thermistor. The open capacitor has an open area and two electrodes that are at least partially exposed via the open area and electrically isolated. The electronic device further includes a control circuit coupled to the NTC thermistor and the open capacitor. The control circuit is configured to detect a voltage drop across the NTC thermistor and the open capacitor if conductive liquid enters the open area of the capacitor and electrically connects the two electrodes that are at least partially exposed via the open area.

Disclosed are methods, systems, and devices to adaptively charge a battery. Charging current is applied to charge the battery. After application of the charging current, at least one discharging pulse is applied to the battery. During an ON period of the discharging pulse, at least one battery parameter is measured. One or more charging parameters are adapted based on the at least one battery parameter as measured during the ON period of the discharging pulse. The battery is charged based on the adapted one or more charging parameters.

A wireless device charger configured to produce an alternating magnetic field, thereby inducing an alternating electrical current within a capture coil of a personal electronic device proximate to the wireless device charger, said wireless device charger includes a source coil having a ferrite element configured to generate the alternating magnetic field, a housing formed of a thermally conductive material in thermal communication with the ferrite element, and an air movement device configured to produce an air flow across a surface of the housing flowing from an air inlet to an air outlet, thereby reducing a housing temperature. The surface of the housing defines a plurality of fins extending along the housing in a direction of the air flow. At least one fin in the plurality of fins has a non-symmetric surface, thereby creating turbulence in the air flow.

An electronic device is provided. The electronic device includes a power receiver including a power receiving coil, a battery, and at least one processor operatively connected to the power receiver and the battery, wherein the at least one processor may be configured to identify whether a wireless charging protection mode has been entered, to wirelessly receive power in a first range from the power transmitting device through the power receiver when it is identified that a wireless charging protection mode has not been entered, to charge the battery using power in the first range, to identify a charge amount of the battery charged for a designated time, and to identify that a metallic foreign object exists, and to change the heat generation control condition in case it is identified that the charge amount of the battery is less than a designated value.