A parallel charging-discharging management system of multiple batteries comprises a main control module, a charging dual-MOS control module, a discharging dual-MOS control module, a communication module, a voltage sampling module, a current sampling module, a temperature sampling module, an electric quantity display module and batteries; the main control module is connected with a charging dual-MOS control module, a discharging dual-MOS control module, a communication module, a voltage sampling module, a current sampling module, a temperature sampling module and an electric quantity display module; the charging dual-MOS control module is connected with a power supply, batteries and a main control module, the discharging dual-MOS control module is connected with the batteries; the main control module and the load, the current sampling module is connected with the batteries and the main control module; the temperature sampling module is connected with the main control module; it prevents battery discharging and isolates parallel batteries.

A vehicle air conditioning device is provided which is capable of accurately judging the need for temperature regulation of an object of temperature regulation mounted in a vehicle and efficiently performing temperature regulation. A compressor 2 to compress a refrigerant, an indoor heat exchanger (radiator 4 and heat absorber 9) for exchanging heat between air supplied to a vehicle interior and the refrigerant, an outdoor heat exchanger 7 disposed outside the vehicle interior, and a control device 11 are provided to perform air conditioning of the vehicle interior. An equipment temperature adjusting device 61 for adjusting the temperature of the object of temperature regulation mounted in the vehicle is provided. The control device controls the equipment temperature adjusting device 61 on the basis of a gradient (ΔTw) of a change in an index indicating the temperature of the object of temperature regulation.

In an embodiment, a method for performing foreign object detection (FOD) testing of a wireless power transmitter includes: placing a foreign object (FO) between the wireless power transmitter and a wireless power receiver; beginning to wirelessly transmitting power from the wireless power transmitter towards the wireless power receiver; a predetermined amount of time after beginning to wirelessly transmit power, measuring an FO temperature indicative of a temperature of the FO, a transmitter temperature indicative of a temperature of the wireless power transmitter, and a receiver temperature indicative of a temperature of the wireless power receiver; determining a weighted average temperature based on the measured transmitter temperature and the measured receiver temperature; and when a difference between the measured FO temperature and the weighted average temperature is higher than a threshold temperature, asserting an error flag indicative that the FOD test failed.

Embodiments of the present invention provide a method for powering an electronic device with a battery or other backup power supply when an external power source is removed from the electronic device. The method determines if the ambient temperature of an electronic device is below a threshold and if the ambient temperature is below the threshold adjusting a minimum state of charge of the battery to prolong the life of the battery.

A method for controlling power transfer from a grid to a rechargeable energy storage system, RESS, and/or an auxiliary load of the vehicle, via at least one intermediate power transfer component. The method comprises providing predicted operational information of the vehicle, the predicted operational information comprising a connected time period in which the vehicle is connected to the grid, providing component data comprising power transfer characteristic of the intermediate power transfer component, the component data including at least the critical temperature limit of the intermediate power transfer component, transferring power from the grid to the RESS and/or from the grid to the auxiliary load of the vehicle according to a power transfer model, such that the temperature of the intermediate power transfer component is kept at least below the critical temperature limit.

A downhole power system includes an energy storage adapted to operate at high temperatures, and a modular signal interface device that serves to control the energy storage component as well as offer a means of data logging at high temperatures. The controller is fabricated from pre-assembled components that may be selected for various combinations to provide desired functionality. The energy storage may include at least one ultracapacitor.

A method for charging a battery includes coupling an electrical device in a circuit between the battery and an electrical power source. The electrical device having on and off states that are mechanically different. The method includes charging the battery by setting the electrical device to the on state, measuring current flowing through contacts of the electrical device while in the on state, determining current as a function of time flowing through the contacts of the electrical device, using the current as a function of time as a variable in a thermal model based on heating of the contacts and cooling of the contacts, determining by the thermal model a predicted temperature of the contacts based on the current as a function of time and the heating and cooling of the contacts and controlling the on and off state of the electrical device based on the predicted temperature.

A method for transmitting wireless power in a wireless charging system and a wireless power transmitting unit (PTU) are provided. The method for transmitting wireless power in a wireless charging system includes receiving information related to a voltage from each of a plurality of power receiving units (PRUs), identifying a voltage ratio of each of the plurality of PRUs based on the received information where the voltage ratio is a current voltage relative to a first voltage, determining a PRU among the plurality of PRUs based on the identified voltage ratio, and adjusting transmission power according to a voltage setting value of the determined PRU.

The invention includes a charging device for charging electrical energy storage devices, which has a cable reel, a charging cable, a measuring unit and a charging control unit. The measuring unit forwards a measured value of a temperature to the charging control unit, which controls a charging process of the electrical energy storage device based on the measured value of the temperature. If the temperature measured value, which is measured by the measuring unit, exceeds a predetermined threshold value, the charging control unit controls the charging current in such a way that it is reduced so that the temperature is decreased.

A wireless charging system for charging a secondary battery, the wireless charging system including: a central sensor configured to sense a swelling of the secondary battery; a peripheral sensor on a peripheral portion of the central sensor and configured to sense the swelling of the secondary battery; and a sensitivity ratio measurement component configured to measure a ratio of sensitivity of the peripheral sensor to sensitivity of the central sensor, wherein the sensitivity ratio measurement component is configured to stop a charging progress in response to the measured ratio of sensitivity of the peripheral sensor to sensitivity of the central sensor being greater than a preset ratio.