摘要:
An exemplary embodiment includes a method of determining a state of charge of a battery system including determining a temperature dependent magnetic property value of a magnetic material proximate a battery cell; determining a temperature compensated value of said determined magnetic property value; and, using said temperature compensated value as an input to a state of charge (SOC) estimator to determine a state of charge (SOC) of said battery system.
摘要:
A method for a motor vehicle includes using a regenerative brake system that produces electric current as a result of application of said regenerative brakes and sending at least a fraction of the electric current directly to an electrical accessory of the vehicle and bypassing the battery. One electrical accessory may be an electrically heated catalytic converter.
摘要:
A cluster or array of reference electrode materials is prepared and used to monitor the state of charge of positive and negative active electrode materials of a lithium-ion cell. The reference electrode materials are composed so as to provide useful electrochemical potential values when placed in the same electrolyte in proximity with a positive or negative electrode. The array of reference electrodes includes at least two electrically discrete instances of reference electrode materials. Such duplication of reference material in the array permits confirmation of the present quality and activity of a reference material used for evaluation of positive and/or negative electrode material in a lithium-ion cell.
摘要:
A system for heating and cooling a vehicle includes a solar panel disposed on a surface of a vehicle and a thermoelectric unit i) disposed on or in an internal surface disposed in a cabin area of the vehicle, and ii) operatively connected to the solar panel. The thermoelectric unit is configured to heat and/or cool the internal surface in response to electric current applied thereto from the solar panel. The system further includes a control unit operatively associated with the thermoelectric unit. The control unit is configured to determine the amount and direction of the electric current to be applied to the thermoelectric unit based on i) a measured ambient temperature, ii) a measured temperature of the internal surface, and iii) a user-preferred reference temperature.
摘要:
A porous polymer sheet or membrane is provided with a thin coating of an electrically non-conductive ceramic composition and the coating conforms to all surfaces, including the pore surfaces, of the membrane. Such a coated membrane serves well, for example, as an intra-cell separator in a lithium ion battery. The coating increases the mechanical properties and thermal stability of the separator in battery operation and retains electrolyte. The coating may be formed by a two-step vapor-phase process in which atoms of one or more metals such as aluminum, calcium, magnesium, titanium, silicon and/or zirconium are deposited in a conformal layer on a workpiece surface. The metal atoms may then be reacted with ammonia, carbon dioxide, and or water to form their respective non-conductive nitrides, carbides, and/or oxides on the surface. The two-step process is repeated as necessary to obtain a ceramic material coating of desired thickness.
摘要:
One exemplary embodiment includes a method including providing a battery, producing a first magnetic field so that a second magnetic field is induced in the battery, sensing a magnetic field resulting from the interaction of the first magnetic field and the second magnetic field, utilizing the sensed net magnetic field to determine the state of charge of the battery.
摘要:
An active material assembly is provided having a thermally-activated active material apparatus with an elongated, non-planar shape and a thermoelectric device in thermal contact therewith. The thermoelectric device is characterized by a thermal differential when current flows through the device to activate the thermally-activated active material apparatus, thereby altering at least one dimension thereof. Multiple discrete thermoelectric devices may be in thermal contact with the active material apparatus and electrically in parallel with one another. The active material apparatus, which may be multiple active material components, each with one of the thermoelectric devices thereon, may be encased within a flexible electronic-insulating material to form an articulated active material assembly that can achieve different geometric shapes by separately activating one or more of the different thermoelectric devices. A method of fabricating an articulated active material assembly is also provided.
摘要:
A method of generating electrical current in a system comprising a power-plant unit and/or hydrogen storage medium by transferring heat generated by the hydrogen storage medium and/or power-plant unit to a thermoelectric device, and converting the heat to generate electrical current using the thermoelectric device.
摘要:
A vehicular electrical system for a hybrid electric vehicle provides a high voltage electrical system having a high power electrical energy storage device (HPD) and a power inverter that cooperate to provide power to a hybrid electric vehicle propulsion system; and a low voltage electrical system having a low voltage power source, at least one accessory power load, and a control switch that toggles between an opened and a closed position to control the flow of current flowing between the low voltage power source and the HPD. A method of using the vehicular electrical system provides the step of using the HPD and power inverter to provide power to the electric vehicle propulsion system; and opening a control switch to isolate the low voltage system from the high voltage system and closing a control switch to charge the HPD
摘要:
A sheet material is gripped at its edges and hot blow formed by a pressurized working gas against a forming tool surface. The flow characteristics of the material are determined at increasing gas pressures over a range of temperature relevant to the forming operation. A predetermined pressure/time schedule is determined at a reference temperature for rapid shape formation of good parts on a continual basis. The process is then controlled as parts are thus formed by measuring the forming temperature of the parts and correcting the pressure time schedule, using the determined flow characteristics, for the actual temperature to achieve the desired shape evolution of the parts.