A heat pump system for a vehicle may include a battery cooling line that is connected with a battery module and in which coolant moves; a chiller that is connected with the battery cooling line through a first connection line to adjust a temperature of coolant by selectively exchanging a heat of a refrigerant and coolant injected therein and that is connected with a refrigerant line of an air-conditioner device through a second connection line; an electric unit device cooler including a radiator and a first water pump that are connected through a cooling line to circulate coolant for cooling a motor and an electronic unit and that is selectively connectable with the battery cooling line and the first connection line through a first valve; and a bypass line selectively connecting the second connection line and the refrigerant line through a second valve provided in the refrigerant line.

According to one embodiment, a nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. The negative electrode includes a negative electrode current collector and a negative electrode mixed-material layer on the negative electrode current collector. The negative electrode mixed-material layer includes a titanium-containing metal oxide and a binder including an acrylic resin. The negative electrode satisfies α/β>1.36×10.sup.−2, where “α” is a peel strength (N/m) between the current collector and the negative electrode mixed-material layer, and “β” is a cutting strength (N/m) according to a surface and interfacial cutting method in the negative electrode mixed-material layer.

A charging device for an energy store of an electrically driven vehicle, which includes a charging plug for transmitting an electrical charge to the energy store of the motor vehicle, a charging line for connecting the charging plug to a power grid, and a charging pillar with a docking station for receiving the charging plug when it is not in use and for connecting the charging line to the power grid. A cooling device for cooling the charging plug is arranged in the docking station.

An apparatus for wirelessly transferring charging power is provided. The apparatus comprises a ferrite structure. The apparatus comprises a first coil comprising a first conductor wound in a first layer at an outer side of the first coil and wound in a first plurality of stacked layers on an inner side of the first coil. At least one layer of the first plurality of stacked layers on the inner side of the first coil is recessed into the ferrite structure. The apparatus comprises a second coil comprising a second conductor wound in a second layer at an outer side of the second coil and wound in a second plurality of stacked layers on an inner side of the second coil. At least one layer of the second plurality of stacked layers on the inner side of the second coil recessed into the ferrite structure.

An inductive alignment system is provided. The system includes a power source providing a forcing function and a first inductor in communication with the power source. The first inductor exhibits a first electrical property in response to the forcing function. The system also includes a second inductor in communication with the first inductor. The second inductor exhibits a second electrical property in response to the forcing function. The system includes a comparator that compares the first electrical property with the second electrical property and generates a signal based at least in part on a deviation between the first electrical property and the second electrical property. The deviation is caused at least in part by inductive coupling between a proximate object and at least one of the first inductor and the second inductor. A method of inductive alignment using the above system is also provided.

An assembly and method are provided for detecting an object within a wireless charging region of an electric vehicle. The method includes applying by a controller, a voltage to the wireless charging region to generate a capacitance value and measuring by the controller, the capacitance value of an electromagnetic shield disposed on the underside of the vehicle. Further, the controller monitors the capacitance value of the electromagnetic shield; and the controller detects a change in the capacitance value when the object enters the wireless charging region.

A vehicle system includes a controller configured to, responsive to an alignment mode, disable a power rectifier configured to transfer charge between a secondary coil and battery, and enable a precision rectifier to output a voltage responsive to current induced in the secondary coil resulting from current through a corresponding primary coil, and responsive to the voltage exceeding a threshold, enable the power rectifier and disable the precision rectifier.

A coil alignment method performed in a coil alignment apparatus coupled to a VA controller includes: sensing magnetic field intensities induced from a ground assembly (GA) coil through a first auxiliary coil and a second auxiliary coil which are fixedly coupled to a VA coil; comparing a first magnetic field intensity sensed through the first auxiliary coil with a second magnetic field intensity sensed through the second auxiliary coil; moving the VA coil or the GA coil to a position where there is a predetermined difference or less between the first magnetic field intensity and the second magnetic field intensity; and moving at least one of the VA coil and the GA coil in a direction facing each other, so that a center point of the VA coil and a center point of the GA coil are located within a shortest distance of each other or within a certain error range of the shortest distance, while maintaining the predetermined difference or less between the first magnetic field intensity and the second magnetic field intensity.

Certain aspects of the present disclosure provide apparatus and methods for balancing charge in a plurality of cells in a battery. In one example apparatus, the primary winding of the transformer may be coupled to a bus, and the secondary winding may be coupled to a cell of the plurality of cells in the battery. The apparatus also includes a switch coupled to the primary winding of the transformer and one or more control circuits coupled to the switch. The control circuit may be configured to control the first switch based on a voltage at a first terminal of the primary winding to control transfer of power between the cell and the bus via the transformer.

A high power EV fast charging station with solar energy system (EVFCS-SES) having a HV DC bus, several EVFCS-SES cells connecting in parallel and with their universal battery interfaces, and a storage battery system provides the following functions: solar energy generation; solar energy generation plus a direct storage battery charging; high power EV fast charging with either solar energy or storage battery or AC grid power. These functions enable EVFCS-SES system to charge any EV battery with solar energy in minutes, convert solar energy to AC grid power, and supply electricity to building loads at same time. In addition, it stores unused solar energy into storage battery for supplementing solar energy in cloudy days or at night. Combining EV fast charging system and solar energy generation system into one system achieves a low cost, high efficient and high power EV fast charging station with solar energy generation system. Furthermore, this system takes full advantage of solar energy and eliminates or reduces AC grid power usage effectively. As a result, it makes both EV fast charger and solar energy generation system more desirable and economical.