Charge controller

About: Charge controller is a research topic. Over the lifetime, 1461 publications have been published within this topic receiving 10009 citations. The topic is also known as: charge regulator & battery regulator.

Universal charging station and method for charging electric vehicle batteries

Abstract: A method and apparatus for charging the battery (84) of an electric vehicle (80) are provided. When the electric vehicle is connected to a charging station (82), it is interrogated to determine the nature of the charge controller (86) that is on board the vehicle; and logic decisions invoking the particular mode for charging the vehicle are made depending on the nature and type of charge controller that is on board the vehicle. Thus, delivery of charging energy to the battery (84) in the vehicle may be entierely under the control of a charge controller on board the vehicle (86); or if the control module in the vehicle is less sophisticated then delivery of charging energy will be under the control of a charging module within the charging station. Parameters of initial charging current and voltage are therefore set either by the on board battery charging controller, or the charge controller in the charging station; alternatively, those parameters may be set manually or by insertion of a card into a data interface to establish initial charging conditions. Under controlled conditions, a plurality of vehicles may be charged at a single establishment having a plurality of charging stations, either sequentially or simultaneously, depending on the cirteria to be established. The charging station may be privately owned, so as to charge a fleet of vehicles; or there may be a plurality of charging stations at a publicly accessible service station.

Charging station for electric vehicles.

Abstract: A charging station for electric vehicles which have rechargeable batteries is provided. The charging station comprises a power section controlled by a fast acting power controller, a power connector and associated power cables for connecting to the vehicle, an interface with signal cables to carry status and/or control signals between the vehicle and the power controller, and a lockout which precludes delivery of power to the vehicle except when the power connector is in place. High charging currents are delivered to the battery of the vehicle as a consequence of signals at any instant in time to the power controller, so as to be able to turn delivery of the charging current on and off in less than a few milliseconds. The resistance free voltage of the vehicle battery is measured during intervals when the charging current is off, and the operation of the power controller is a function of the battery resistance free voltage at any instant in time. Operation may be manually controlled, whereby at least maximum voltage and current settings are preset by the operator; or operation may be completely automatic and under the control of a charge controller within the vehicle and associated with the battery. Thus, for each vehicle that is equipped with a charge controller, the operation of the charging station is battery specific, and may be quite different as to conditions of voltage and current being delivered to another electric vehicle which may be subsequently re-charged from the same charging station.

Traction battery charging with inductive coupling

Abstract: A method and apparatus for charging the battery of an electric vehicle are provided; where charging energy is delivered from a charging station at a predetermined voltage and at a delivery frequency which is in the range of from 10 kHz up to 200 kHz. The charging energy is transferred to the vehicle through an inductive coupler, which has a primary side connected to the charging station and a secondary side mounted within the vehicle, together with a rectifier mounted in the vehicle and interposed between the secondary side and the traction battery to be charged. When the electric vehicle is connected to a charging station, it is interrogated to determine the nature of the charge controller that is on board the vehicle; and logic decisions invoking the particular mode for charging the vehicle are made depending on the nature and type of charge controller that is on board the vehicle. Thus, delivery of charging energy to the battery in the vehicle may be entirely under the control of a charge controller on board the vehicle; or, if the control module in the vehicle is less sophisticated, then delivery of charging energy will be under the control of a charge control module which is present within the charging station. The value of initial charging current is therefore set either by the on board battery charging control module in the vehicle, or by the charge control module which is present in the charging station; alternatively, the initial value of charging current may be preset at the charging station. That parameter, and the amount of charging energy to be delivered, may be established by insertion of a card into a data interface on the charging station. Under controlled conditions, a plurality of vehicles may be charged at a single establishment having a plurality of charging stations, by distributing energy to any vehicle according to priority criteria to be established.

PV system fuzzy logic MPPT method and PI control as a charge controller

Abstract: This paper puts forward to Fuzzy Logic MPPT (Maximum Power Point Tracking) method applied photovoltaic panel sourced boost converter, under variable temperature (25–60 °C) and irradiance (700–1000 W/m2) after that the PI control was applied buck converter to behave as a charge controller. The voltage and current of PV panels are nonlinear and they depend on environmental conditions such as temperature and irradiance. Variable environmental conditions cause to change voltage, current and also cause to change maximum available power of PV panels. To increase efficiency and decrease payback period of the system, it needs to operate PV panels at maximum power point (MPP). Under any environment conditions there is unique MPP. To operate PV panels at that point (MPP) there are many MPPT method in literature, FLC MPPT method was preferred in this study because, its rapid response to changing environmental conditions and not affecting by change of circuit parameters. The accuracy of FLC MPPT method used in this system to find MPP changes, from 94.8% to 99.4%. To charge a battery there are two traditional methods which are constant current (CC), and constant voltage (CV) methods. For fast charging with low loss constant current and voltage source is a need. One of the methods providing constant is PI control which used in this study. PI control is not only well developed and a simple technique but also it provides satisfactory results. The goal of this study is operating PV panel at maximum power point under variable environment conditions to increase efficiency and reduce cost and also provide appropriate current and voltage for charging battery to charge quickly, reduce losses and also increase life cycle of battery. This system was established and analyzed in MATLAB/Simulink.