13131 results about "Electric cars" patented technology

A system for charging batteries of electric vehicles from public fixtures such as street lights and parking meters includes modifying the fixture to convert it to a vehicle battery charging station using a power interface module having a novel keyed electrical power output receptacle connectable to power mains powering the fixture. The system includes a complementarily coded, keyed plug which must be inserted into the power output receptacle to access electrical power from the receptacle, the plug being located at the input end of vehicle charger cable terminated at output end thereof by a vehicle-mounted charge control system which will actuate a charging current contactor permitting charging current to flow from the receptacle to batteries within the vehicle only if a pre-paid charge authorization payment device, such as a magnetically or electronically encoded charge card is inserted into a charger station access enable device such as card reader mounted in the vehicle.

An apparatus and method for sequentially charging multiple electric vehicles. The apparatus including an electric vehicle supply equipment (EVSE) having an electrical plug connected to a power cord. The power cord is connected to a housing containing a number of electrical components configured to control the power flow to an electric vehicles to recharge the vehicles' batteries. The power cord is divided into multiple power cords that extend from the housing and connect to standard electric vehicle connectors compatible with battery electric vehicles (BEV) and plug-in hybrid electric vehicles (PHEV). The EVSE determines, based on a number of possible criteria, which of the multiple electric vehicles to charge at a given time.

Provided are a method and apparatus and method for the alignment, verification and optimization of wireless charging systems manufactured for use and used with electric vehicles. With some minimal modifications the same apparatus may be used to align a charging coil mounted on a vehicle with a charging coil, mounted on or in an electric vehicle charging bay or parking space, or to verify and optimize manufactured wireless vehicle charging system elements before they are installed.

A permanent magnet rotating electric machine comprises a stator having stator windings wound round a stator iron core and a permanent magnet rotor having a plurality of inserted permanent magnets in which the polarity is alternately arranged in the peripheral direction in the rotor iron core. The rotor iron core of the permanent magnets is composed of magnetic pole pieces, auxiliary magnetic poles, and a stator yoke, and furthermore has concavities formed on the air gap face of the magnetic pole pieces of the rotor iron core of the permanent magnets, gently tilting from the central part of the magnetic poles to the end thereof. In a permanent magnet rotating electric machine, effects of iron loss are reduced, and an electric car using highly efficient permanent magnet rotating electric machine are realized.

The invention discloses an SOC (State of Charge) and SOH (State of Health) prediction method of an electric vehicle-mounted lithium iron phosphate battery, which comprises the following steps of: (a) improving a Thevenin cell equivalent model; (b) determining the state equation and the output equation of a system; (c) identifying battery model parameters; (d) using a Kalman filter algorithm to iterate the state variables of the system, so that the predictive value of SOC is closer to the actual value; and (e) using a dual-channel Kalman filter algorithm to carry out the online predication of an internal resistance and capacity of the lithium iron phosphate battery, and simultaneously predicating the SOH of the battery according to the changes in the internal resistance and the capacity value of the battery in the current state and the initial state. With the method, the predication precision of SOH of the battery is effectively improved, the decline in battery performance can be determined more accurately, and the internal resistance and capacity information of the battery is combined to provide a basis for making the battery management strategy and maintaining and replacing the battery.

The invention discloses a fast power transformation station of a battery box of an electric automobile and a replacement method of the battery box. The power transformation station at least comprises the following devices: an automobile positioning platform, a battery box lifting and replacing platform, a stacking machine, a battery box storage rack, a logistics transmission port of the battery box and a delivery roller way which are symmetrically arranged relative to the longitudinal movement axis of the stacking machine, the simultaneous working of the two power transformation systems can be achieved, and the space utilization rate and the power transformation efficiency are improved. The fast power transformation station also comprises a power supply system which is arranged on a roof and consists of a solar photovoltaic power generation battery board; and self sufficiency of power can be achieved by virtue of the solar energy, the power supply of the equipment in the station or the charging for the battery box in the station are met. The invention also provides the replacement method of the battery box of the power transformation station. According to the power transformation station, the distribution is reasonable, the space utilization rate is high, the work of the equipment is reliable and simple, and the power transformation process is fast, so that the power transformation time can be shortened, the power transformation fault is reduced, and the compatibility for different vehicles and different battery boxes is also improved.

Pursuant to some embodiments, insurance systems, methods and devices are provided in which electric vehicle information, including electric vehicle charging information, may be received over a communications network. The electric vehicle charging information may be automatically associated with automobile insurance premium information. An integrated presentation of the electric vehicle charging information and the automobile insurance premium information may then be transmitted, over the communications network, for presentation to an owner of the electric vehicle.

An integrated and isolated onboard charger for plug-in electric vehicles, includes an ac-dc converter and a dual-output dc-dc resonant converter, for both HV traction batteries and LV loads. In addition, the integrated and isolated onboard charger may be configured as unidirectional or bidirectional, and is capable of delivering power from HV traction batteries to the grid for vehicle-to-grid (V2G) applications. To increase the power density of the converter, the dual-output DC-DC resonant converter may combine magnetic components of resonant networks into a single three-winding electromagnetically integrated transformer (EMIT). The resonant converter may be configured as a half-bridge topology with split capacitors as the resonant network components to further reduce the size of converter. The integrated charger may be configured for various operating modes, including grid to vehicle (G2V), vehicle to grid (V2G) and high voltage to low voltage, HV-to-LV (H2L) charging.

Charging stations, systems for charging and identifying electric vehicles, and methods for detecting and providing charging information of a vehicle are provided. The charging stations include vehicle detectors, charging connectors, and system controllers to estimate the state of charge of a vehicle based on current measurements from the charging connectors and then to output charge status signals if the state of charge is at or above a predetermined energy level and the vehicle is detected as being properly positioned by the vehicle detectors. These results may be output to indicators, computers, and network connections. Also disclosed are systems where the vehicle has a vehicle information device readable by the vehicle detector to obtain vehicle data that is transmitted to the system controller and other components of the system. Methods of monitoring current, estimating state of charge, and providing a charge status signal if certain conditions are also present.

The invention relates to an intelligent battery management system of an electric car. In the invention, a core control module is connected with N battery data collecting modules via a K bus and is connected with a charging module, a battery pack monitoring module and a touch screen display system; the battery management system comprises a database management module, the battery pack monitoring module, a self-checking control module and an abnormal control module; the battery data collecting modules are provided with a plurality of battery data collecting control chips; and the core control module is connected to computer control software by utilizing a universal serial bus (usb) interface. The battery management system provided by the invention has the advantage of solving the problems that real-time and dynamic comparison cannot be carried out, a corresponding fault processing function and a mutual information platform are lacked and the like in the past. The invention realizes that data such as voltage, current, temperature and the like of a battery are subjected to acquisition, SOC (State of Charge) estimation, real-time communication, equalization and insulation monitoring and compared with each standard datum in a database, so that a dynamic contrast model is established; and due to the adoption of a layered pattern, the control modules are used for controlling the voltage, the current and the temperature. The interaction with users and the warning are carried out through a touch screen.

This invention is directed to a modularized interface for connecting a plug-in electric vehicle to the energy grid. For use with public or semi-public outlets, the modularized interface comprises a module and a smart socket, where the module is integrated within or capable of being connected to, the vehicle's charging interface. The module is normally disabled, but is enabled only after the end user is authenticated, the smart socket and its associated meter have been identified, and the module and the end user's account with the local utility are validated. The module meters the energy consumption, and, when the module is disconnected from the smart socket, indicating termination of the charging session, the metered data is communicated to the utility for updating the end user's account, and the module is disabled. The module is also capable of use with conventional outlets located, for example, in private residences.

The invention discloses an estimation method of state of charge (SOC) of a power battery. The method comprises the following steps: estimating the SOC estimated value SOC2 of the power battery by an electricity accumulative method; taking a Sigma-point Kalman filter (SPKF) as a basic estimation tool, taking a dual-RC circuit battery model as a time and measurement update engine of the SPKF, and estimating the SOC estimated value SOC1 of the power battery by a Kalman filter method; and obtaining the final SOC estimated value SOC based on the SOC estimated value SOC2 by the electricity accumulative method and the SOC estimated value SOC1 by the Kalman filter method by utilizing a weighted average method. Correspondingly, the invention further discloses an estimation system of the SOC of thepower battery. The invention has the advantages of high SOC estimation accuracy, stable operation and the like, and is convenient in real-time estimation, thus being applicable to pure electric vehicles and hybrid electric vehicles in need of the power battery.

A controller and methods for controlling the speed of a vehicle having an electric motorized drive is provided. In one embodiment, a method involves determining a steady state average torque and a torque during acceleration or deceleration of the vehicle traveling over an underlying surface. Speed of the vehicle is controlled based on the steady state average torque, the torque during acceleration or deceleration the measured regeneration current generated by a motorized drive arrangement of the vehicle that applies torque to at least one ground-contacting element of the vehicle for traveling over the underlying surface, weight of the vehicle and payload, the torque applied to the ground-contacting element, acceleration of the vehicle and the speed of the vehicle.

A system and method for charging an electric vehicle includes identifying vehicle information corresponding to the electric vehicle based on an electronic image of the electric vehicle, retrieving from an electronically stored database a location of a charging port on the electric vehicle based on the vehicle information, and robotically moving a charging connector according to the retrieved location to engage the charging port of the electric vehicle to charge a battery.

A control system and method are provided for a station to dispense fuel to a vehicle, including an electric vehicle, without requiring dedicated access to a communications network, with the advantage that authorization for fleet vehicles or individuals can be obtained from an access management system, using a portable, wireless device, such as a smart phone or a dashboard appliance. The authorization is wirelessly relayed to the station by the wireless device, to enable the dispensing of fuel. Subsequently, a log comprising the transaction is provided to the access management system, through the same or a different wireless, mobile computing device. The log may also report status and other events, such as load shedding.

A power delivery system in an electric vehicle comprises a connection backplane configured to receive a plurality of modular batteries. The connection backplane operates to route power, status and control signals between a modular battery back, a controller, and a powertrain. A method of operating an EV comprises determining a route for an EV and an amount of energy required to complete the route. The method further comprises coupling an appropriate number of batteries to a connection backplane, wherein the batteries have sufficient energy to power the EV for the duration of the route.

The invention discloses an internet electric car charging point managing system and method. In the system, a server, a charging point and a mobile terminal in an area are linked via an ad-hoc network way; and multi-charging modes, multi-paying ways and multi-charging point navigation selections can be achieved with the cooperation of multifunctional modules of the mobile terminal. The ad-hoc network can be realized, so a user can easily check near charging point states and observe parking lot states; the user can select a navigation position and make charging arrangements; the internet electric car charging point managing system and method has information monitoring and alarming functions, so during the charging period, the electric car under the charge can be monitored; theft and robbery of the electric car can be prevented; and the internet electric car charging point managing system and method has various charging modes and various paying methods, so the user can charge according to practical conditions.

A permanent magnet rotating electric machine comprises a stator having stator windings wound round a stator iron core and a permanent magnet rotor having a plurality of inserted permanent magnets in which the polarity is alternately arranged in the peripheral direction in the rotor iron core. The rotor iron core of the permanent magnets is composed of magnetic pole pieces, auxiliary magnetic poles, and a stator yoke, and furthermore has concavities formed on the air gap face of the magnetic pole pieces of the rotor iron core of the permanent magnets, gently tilting from the central part of the magnetic poles to the end thereof; resulting in a permanent magnet rotating electric machine effects of iron loss are reduced, and an electric car using highly efficient permanent magnet rotating electric machine are realized.

The present invention provides computer-controlled payment systems for charging a fee for battery charging of an electric vehicle, the system including an electric vehicle including at least one battery, a master charger vehicle including a master battery module, a control system in communication with the at least one electric vehicle and the master charger vehicle to enable the master charger vehicle to reach the electric vehicle, wherein the master battery module is adapted to charge the at least one battery; and a payment system adapted to charge a fee to a user of the electric vehicle.

An indicator for use with an electric vehicle having an engine and an electric traction motor. The indicator includes a tachometer gauge for displaying engine revolution speed. The indicator further includes an electric only indicator for displaying whether the vehicle is operating in an electric only mode.

An interior space of an automobile includes a maplamp unit and a plurality of functional units. The maplamp unit is provided on a ceiling of the interior space and is adapted to emit an ultraviolet light therefrom toward and upon a predetermined area of irradiation by the ultraviolet light. The functional units are spaced from each other and yet provided such that they all reside within the irradiation area. The functional units may include a combination meter, a navigation device, an air conditioner operating area, a power window switch area, and a small article placing area. These functional units each include at least one luminescent symbol. The luminescent symbol is adapted to become luminous when irradiated by the ultraviolet light emitted by the maplamp unit.

A method for scheduling a charge of a plug-in electric vehicle (PEV) includes receiving, by a load management system, PEV information from a PEV plugged into an electric vehicle supply equipment (EVSE); transformer information from a transformer management system, the transformer information relating to a transformer associated with the EVSE; determining, by the charging information based on the PEV information and transformer information; providing the charging information to the PEV.

Frequency of judgment of welding of relays is increased to increase likelihood of early detection of welding. It is determined that a battery 22 is not being recharged or discharged when a vehicle speed V of an electric vehicle is approximately 0 and a brake pedal 54 is pressed, and a switching element of an inverter 24 is controlled to be switched to discharge electric charges which are stored in a capacitor 44. After discharging, relays 30, 32 are turned off, and voltages RV1, RV2 between the terminals of the relays 30, 32 are detected by voltmeters 40, 42 to judge whether either of the voltages RV1, RV2 has a threshold value RVref (approximate value 0) or less. When it is so determined, it is judged that the relays 30, 32 are welded, and an LED 70 is illuminated.

The invention provides a control system for heat management of an electric vehicle. The control system is characterized in that the system comprises a refrigerant circulating system, a coolant circulating system and a battery pack temperature control system, wherein the refrigerant circulating system is communicated with the battery pack temperature control system via a water cooler, and the coolant circulating system is communicated with the battery pack temperature control system via a three-way water valve, so the three systems form an intercommunicating and circulating control system to control the temperature in the carriage and the working temperature of the electrical devices of the battery pack. The control system has the following positive effects: effective heat management can be carried out on each part of the electric vehicle; the problem of heating difficulty of the electric vehicle is solved by adopting the residual heat of the electrical devices in an economical and energy-saving manner; preheating and cooling of the power battery of the electric vehicle are well controlled; and the working temperature of the battery and electrical devices of the electric vehicle can be controlled, thus realizing complete heat system management of the electric vehicle.

The invention discloses an electric car charging service billing system based on two-dimension codes and an implementation method of the electric car charging service billing system. Autonomous charging services are conducted by using charging piles, handheld mobile terminals and a charging network system management platform, each charging pile is provided with the unique identification two-dimension code and is used for providing electric car charging services for users, the handheld mobile terminals achieve the functions of two-dimension code scanning, user login and communicating with the charging network system management platform to achieve autonomous services and consumption information displaying with mobile phones or tablet computers, and the charging network system management platform is communicated with the charging piles to achieve the functions of controlling and charging service data collecting, and is communicated with the handheld mobile terminals to achieve the functions of user identifying, charging pile identifying, autonomous user services and consumption information displaying. According to the electric car charging service billing system based on the two-dimension codes and the implementation method of the electric car charging service billing system, smart phones which are widespread currently are fully used as application platforms, the system identifies the users and the charging piles used by the users in the mode of two-dimension code scanning, and value storage and consumption are achieved through network payment.

The invention discloses an intelligent order scheduling method. The intelligent order scheduling method comprises the following steps: obtaining a new order; obtaining geographic positions of a user and a merchant according to information in the new order; calculating a distribution distance between the geographic position of the user and the geographic position of the merchant according to the geographic position of the user and the geographic position of the merchant; monitoring electric vehicle data uploaded by a distribution worker electric vehicle monitoring system, and calculating a pre-estimated driving distance of an electric vehicle of each distribution worker; and carrying out intelligent distribution of the order according to the data. The invention further provides an intelligent order scheduling server, the electric vehicle applied to the intelligent order scheduling method, a mobile terminal applied to the intelligent order scheduling method, and a system applied to the intelligent order scheduling method. By the aid of the intelligent order scheduling method and server, the electric vehicle, the mobile terminal and the system, the short-distance and in-time distribution can be efficiently finished.

The invention discloses a driving range estimation method of an electric car. The driving range estimation method of the electric car comprises the following steps: 1.1 a planned route and the future microcosmic traffic state of the route are obtained according to a set departure site, a destination and the departure time; 1.2 an aggregative variable is calculated based on the obtained speed per second and an acceleration; 1.3 a built electric car electricity consumption rate model is selected according to different driving conditions, and electricity consumption per second is calculated by combining the calculated aggregative variable; and 1.4 residual electric quantity of a current battery is obtained, residual energy of the battery is calculated, and residual range is obtained through circular calculation by combing the electricity consumption of the car. The driving range estimation method of the electric car takes the influence of a real traffic state on the energy consumption of the electric car into account, and overcomes the defect that the estimation result of an existing method is not accurate enough.

The invention discloses a battery change system of a portable electric car and a change method thereof. The system is provided with a foldable electric hydraulic lifting platform, a battery box lifting platform trolley, a battery box pallet and an integrated control platform. In the foldable electric hydraulic lifting platform, foldable horizontal and vertical scissor mechanisms are adopted so that the storage and transportation spaces are compressed and the carrying is convenient; and during the operation, the car is lifted through the vertical scissor mechanism so that the battery box lifting platform trolley can enter the lower side of the car to dismount and change the batteries. An adjusting and positioning battery box with three degrees of freedom, which is remotely controlled to realize transverse movement, longitudinal movement and horizontal rotation, and a horizontal rotation platform which is lifted by means of the a double-layer scissor mechanism are loaded on the battery box lifting platform trolley. By means of a video monitoring camera and a laser positioner, the battery box can be correctly positioned by the battery box pallet; and the operations of the devices are remotely controlled by the integrated control platform. Through the invention, the difficulties that the car batteries cannot be changed and electricity change is badly needed during the running of the car are solved and the batteries of the electric car can be directly changed without an electricity change station.

When an arriving electric vehicle arrives at a car park with parking spaces, a parking state detection means in a parking and power charging system detects the presence of empty parking spaces. An assignment means assigns a ranking of charging performance to each detected empty parking space so that the empty parking space having the charging device of a higher charging performance has a higher ranking of charging performance on the basis of descending order of charging performance of the charging devices. A communication means obtains vehicle parameters of the arriving electric vehicle. A parking space instruction means instructs the arriving electric vehicle to move to and be parked in the empty parking space having the ranking of charging performance selected on the basis of the vehicle parameter such as necessity to charge or degree to easily charge the on-vehicle battery mounted on the arriving electric vehicle.