12849 results about "Electric cars" patented technology

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.

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.

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.

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.

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.

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 provides a secondary battery pack charging and discharging management system. The secondary battery pack charging and discharging management system comprises a battery pack, a step-up and step-down module and a main control module, wherein the battery pack is formed by a plurality of individual battery modules through serial connection; a self-control part of each individual battery module is used for controlling a serial-in switch and a bypass switch to be turned off or turned on; the main control module is used for generating a signal for controlling a battery pack step-up and step-down circuit short-circuiting switch and a signal for selecting a single battery to be serially connected into the battery pack according to the working state of the battery pack, and controlling a step-up and step-down circuit to adjust charging and discharging voltage and current. By adopting the secondary battery pack charging and discharging management system provided by the invention, under the situation that the capacity and the internal resistance of each single battery are different, the utilization ratio, the service life and the safety of the entire battery pack are improved; by calculating balance use battery quantity, under the situation that any step-up circuit is not used, different voltage can be obtained; the operating costs of electricity-consuming equipment such as electric vehicles which use the secondary battery pack charging and discharging management system can be reduced and the overall working efficiency of the equipment is improved.

Foldable electrical vehicles and related charging infrastructure are described. The foldable electrical vehicle generally includes three structural armatures (front and rear wheel-bearing armatures and a seat-bearing armature) that are pivotally interconnected along their lengths such that they may be pivoted between a closed position wherein the three armatures are disposed roughly parallel to each other in a compact folded configuration, and an open riding configuration wherein an angular relation is formed between the armatures.

The invention relates to an electromobile leasing method and system. An electromobile leasing request is sent to a remote data server, a GPS module in a mobile phone sends the geographical position information of the place where a client is located to the remote data server, the remote data server sends the geographical position information of an electromobile closest to the client to the client mobile phone, an IC card reader is used for reading an IC card after the client arrives at the electromobile position, at the time, a communication module in an electromobile control system sends personal information and driving license information read through the IC card reader to the remote data server to be verified, and after the successful verification, the electromobile control system controls an electromobile door to be opened, and then the client can get on the electromobile to drive the electromobile. According to the electromobile leasing method and system, the client is informed of the information of the electromobile closest to the client according to the electromobile pick-up position demanded by the client, the intelligent management of the electromobile leasing is improved, and social resources are saved to the maximum. People can lease the electromobile conveniently.

The invention relates to an electric car power management and monitoring system in the technical field of electric cars. The system comprises an electric car running power dynamic management module, a battery maintenance system, a remote monitoring system, an electric car induction service system and an intelligent analysis platform, wherein the battery maintenance system is connected with various sensors on the electric car and used for acquiring data information and feature parameters; the electric car running power dynamic management module is connected with the battery maintenance system;the remote monitoring system is connected with the battery maintenance system to obtain positioning information from the battery maintenance system on the electric car; the intelligent analysis platform is connected with the electric car running power dynamic management module and used for transmitting model parameter information; and the electric car induction service system is connected with the intelligent service platform system and used for transmitting service queue information and service demand information shared in the network of electric car users. The invention can accurately forecast the residual service life of the battery of the electric car and realize the dynamic management of the running power condition of the electric car.

The present invention relates to an automatic guide method of intelligent industrial transportation vehicle and electric vehicle adopting said automatic guide method. The visual guide method of automatic guide vehicle controlled by computer is characterized by that the camera mounted on the automatic guide vehicle can be used for shooting the running path mark line on the pavement, station address code identifier and running state control identifier, and the computer connected with the camera can utilize image intellectualized identification to obtain the position deviation and direction deviation parameters of the vehicle body and running path mark line and station address and running state control information to give out correspondent control signal to wheel drive mechanism controller to implement automatic guide control of the automatic guide vehicle.