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300results about How to "Increase mileage" patented technology

Range extending type whole electric automobile control system and method

ActiveCN103991386ARealize vehicle controlRealize energy distribution managementSpeed controllerPropulsion using engine-driven generatorsPower batteryElectricity
The invention discloses a range extending type whole electric automobile control system and method. The control system comprises a low-pressure automobile body CAN control system, a whole automobile controller, a motor controller, a generator controller, a battery management system and an insulating detecting unit. According to the control method, when the energy of an automobile power battery is stored sufficiently, a pure electric work mode can be achieved, energy is saved, and environmental friendliness is achieved; when the energy storage consumption of the power battery reaches to a certain degree, the mode of an automobile is switched into a range extending mode, a generator is driven to work to generate electricity to compensate for certain energy, and therefore the driving range of the automobile can be increased. According to the control system and method, the automobile can work in a pure electric mode so that emission can be reduced, the automobile can work in the range extending mode so that the driving range can be increased, the whole automobile control and the energy distribution management of the range extending type electric automobile are achieved, low emission can be achieved, and the driving range can be increased.
Owner:BEIJING INST OF SPACE LAUNCH TECH

Efficiency optimizing method of master-slave type multi-motor driving system

The invention belongs to the field of motor control, and provides an efficiency optimizing method of a master-slave type multi-motor driving system. The efficiency optimizing method comprises master motor independent driving steps, slave motor independent driving steps and dual-motor synergetic driving steps. The principle of efficiency optimizing in dual-motor synergetic driving comprises the steps of obtaining a distribution ratio corresponding to the smallest instantaneous power loss of the multi-motor driving system by changing the distribution ratio of a master motor and the distribution ratio of a slave motor, and therefore obtaining torque and the rotation speed of the master motor and the slave motor when efficiency is optimal. According to the efficiency optimizing method of the master-slave type multi-motor driving system, output power of the master motor and output power of the slave motor can be optimized and distributed in real time according to different traveling working conditions of a vehicle, comprehensive advantages of the different motors are sufficiently expressed, the efficiency of the complete vehicle is kept optimal all the time, therefore, the driving range of the electric vehicle can be effectively prolonged, and economy and dynamic performance are improved.
Owner:ZONSON SMART AUTO CORP

Extended range type electric vehicle power system based on fuel battery and control method for extended range type electric vehicle power system

The invention discloses an extended range type electric vehicle power system based on a fuel battery and a control method for the extended range type electric vehicle power system. The output end of a fuel battery system with a hydrogen pot is connected with an input of a direct current/direct current (DC/DC) transformer through a controllable relay S1; an output of the DC/DC transformer is connected with a lithium iron phosphate power battery pack; the lithium iron phosphate power battery pack is connected with the high voltage input end of a motor controller; the three-phase output end of the motor controller is connected with a driving motor; a whole vehicle controller VMS directly controls an electromagnetic valve for managing hydrogen output and the relay S1 through an input/output (I/O) port, and communicates with the fuel battery system, the DC/DC transformer, a battery management system and the motor controller through controller area network (CAN) buses so as to control a motor to drive the whole vehicle to run and manage the whole power system. The fuel battery system with the hydrogen pot is used as a vehicle-mounted charger for the lithium iron phosphate power battery pack; and a scheme of a vehicle-mounted range extender of an electric vehicle can be provided. The efficiency of the fuel battery system serving as the vehicle-mounted range extender is higher than that of an internal combustion engine; furthermore, the noise is low, and zero emission and zero pollution are realized.
Owner:武汉海亿新能源科技有限公司

Power system of compound energy electro-vehicle

The invention provides a power system of a compound energy electro-vehicle, comprising a compound power supply controlling machine box, a main power supply connected with the power supply controlling machine box, a solar energy photovoltaic cell and a super capacitor module set, wherein, the output end of the compound power supply controlling machine box is connected with a motor driving controlling module and an assistant device, and the other end of the motor driving controlling module is connected with a motor; a hardware main circuit and a control circuit which are mutually connected are arranged in the compound power supply controlling machine box; the hardware main circuit is connected with the solar energy photovoltaic cell via an unidirectional DC/DC converter and is connected with the super capacitor module set via a bidirectional DC/DC converter; the input end of a microprocessor in the control circuit is connected with a temperature detecting module, a current detecting module and a pressure detecting module via a signal conditioning circuit, and the output end is connected with the motor driving circuit and an assistant device potentiometer via an optocoupler isolation circuit. The invention can better improve the acceleration performance and climbing performance of a vehicle, reduce heavy current discharging time of the main power supply and avoid the main power supply from damage and reduction of volume.
Owner:SOUTH CHINA UNIV OF TECH

Extended range pure electric automobile system

The invention discloses an extended range pure electric automobile system. A complete automobile controller, a control power supply and a DC/DC electric pressure converter are connected in turn; a brake system is connected with a driving motor; a motor controller, the driving motor and a speed change and transmission mechanism are connected in turn; the DC/DC electric pressure converter and a vehicle-mounted charger are connected with a power battery pack; an extended range power supply is connected with the vehicle-mounted charger, the power battery pack and an energy management center; the energy management center is connected with the power battery pack; and the complete automobile controller, the vehicle-mounted charger, the energy management center, an operation control mechanism, the motor controller and the speed change and transmission mechanism are connected through a communication bus. The extended range pure electric automobile system has the advantages of effectively prolonging the full charge endurance of the electric automobile, not needing a fuel generator or a fuel storage device and fulfilling the aims of purely and electrically extending the range, optimizing and prolonging the service life of the power battery pack, improving the reliability and safety performance of the complete automobile, and the like.
Owner:CHAOWEI POWER CO LTD

Pure electric vehicle power assembly system

The invention relates to a pure electric vehicle power assembly system which solves the problems that in the prior art, one motor can not simultaneously meet the requirements on the vehicle accelerating performance and the maximum vehicle speed, and the increase of the power of the motor only depends on the increase of the volume of the motor, thereby increasing the quality and the performance parameters of the whole vehicle and increasing the manufacturing cost. The assembly system is arranged on a vehicle, is connected with a driving axle and mainly comprises two motors and power batteries, wherein the two motors comprise a high-speed motor and a low-speed motor; the high-speed motor is connected with the low-speed motor through a spline shaft; the high-speed motor and the low-speed motor are arranged coaxially; the low-speed motor is close to one end of the driving axle and is connected with the driving axle; the power output of the high-speed motor is transmitted to the driving axle through the low-speed motor; and the high-speed motor and the low-speed motor are respectively connected with motor controllers. By combining the high-speed motor and the low-speed motor, the applications in different working conditions, such as starting, low-speed operation, medium-speed operation, high-speed operation, climbing operation, braking operation and the like are realized. The combination of the two motors enables the motors to be always in the high-efficiency area, thereby improving the utilization ratio of the power energy and prolonging the continuously-driving distance.
Owner:万向电动汽车有限公司 +1

Pure electric car air conditioning compressor control method and system based on fuzzy control

The invention discloses a pure electric car air conditioning compressor control method and system based on fuzzy control. The control method comprises the following steps of obtaining a temperature in a car; calculating the measurement value of the temperature difference between the temperature in the car and a setting temperature according to the temperature in the car; when the measurement value of the temperature difference is in a first temperature difference range, calculating the measurement value of the temperature difference change rate between the temperature in the car and the setting temperature; respectively quantizing the two measurement values, obtaining conversion values of the temperature difference and the temperature difference change rate in the corresponding theory field; and then combining the preset fuzzy control rule, calculating and outputting the fuzzy control coefficient; calculating the working rotational speed of an air conditioning compressor according to the fuzzy control coefficient, and controlling the air conditioning compressor to run according to the working rotational speed. According to the method and the system provided by the invention, by adopting the compressor variable frequency control principle, the rotational speed of the compressor can be changed to a certain corresponding trend according to the change of the temperature in the car, so tat the comfort of drivers and passengers can be met to the utmost extent; and compared with the current fixed frequency control, the electricity quantity of a battery pack can be saved, and the continuous driving range of a pure electric car can be effectively prolonged.
Owner:ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD

Range extended electric vehicle power system adopting planetary gear two speed transmission

The invention relates to a range extended electric vehicle power system adopting a planetary gear two speed transmission. The range extended electric vehicle power system adopting the planetary gear two speed transmission is characterized in that a crankshaft of an internal combustion engine is connected with a shell of a double clutch transmission device; a first clutch of the double clutch transmission device is connected with a planetary gear mechanism through a transmission shaft; a second clutch of the double clutch transmission device is connected with a rotor of a first motor; a rotor of a second motor is connected with any one component of a sun wheel, a planetary carrier and a gear ring of the planetary gear mechanism; power is output by the set second component of the sun wheel, the planetary carrier and the gear ring; and two gear shifts are realized by controlling the motion state of the set third component of the sun wheel, the planetary carrier and the gear ring. A vehicle is mainly driven by the second motor when running at low speed, so that low-speed and low-load work of an engine is avoided and the economy and the emission performance of the whole vehicle are improved. The vehicle is driven by the power system through parallel operation when running at high speed, so that the energy transfer efficiency is high and the driving range of the vehicle is further prolonged on the basis of guaranteeing the power performance of the whole vehicle.
Owner:CHINA FIRST AUTOMOBILE

Distributed asymmetrical cooling device and method for electric automobile power battery

The invention discloses a distributed asymmetrical cooling device and method for an electric automobile power battery. The distributed asymmetrical cooling device comprises a vehicle-mounted cooling device body and a cooling charging pile; the vehicle-mounted cooling device body comprises a module heat exchanger tightly making contact with a battery set, a first cooling liquid conveying pipeline connected with the module heat exchanger and enabling the module heat exchanger to form a loop, a first three-way valve, a first cooling liquid inflow and outflow connector and a first charging connector connected with the battery set, and a first water pump is arranged on the first cooling liquid conveying pipeline; and the cooling charging pile comprises a charging mechanism and a cooling mechanism, and a second charging connector and a second cooling liquid inflow and outflow connector are formed in the cooling charging pile. According to the distributed asymmetrical cooling device and method for the electric automobile power battery, a vehicle-mounted refrigerating device body is canceled, transferred to the ground and cools the battery set only in the charging process; and through the structure, the automobile occupied space and the automobile weight are reduced, vehicle-mounted electric energy cannot be additionally consumed, and thus the automobile traveling distance is increased.
Owner:SUZHOU GAOMAI NEW ENERGY CO LTD

Power system of extended-range type electric vehicle adopting combination of double clutch and planetary gears

The invention discloses a power system of an extended-range type electric vehicle adopting a combination of a double clutch and planetary gears. The power system comprises an internal combustion engine, a planetary gear system, a first motor, a second motor and the double clutch. The planetary gear system comprises a planetary carrier, the planetary gears, a gear ring and a sun wheel. An output shaft of the internal combustion engine is connected with the planetary carrier. A rotor of the first motor is connected with the gear ring. The sun wheel is connected with one end of a transmission shaft, and the other end of the transmission shaft is connected with an input disc of the double clutch. A rotor of the second motor is connected with the input disc of the double clutch. The output end of a first clutch part of the double clutch is provided with a first driving gear, and the output end of a second clutch part of the double clutch is provided with a second driving gear. The first driving gear is meshed with a first driven gear. The second driving gear is meshed with a second driven gear. The first driven gear and the second driven gear are arranged on a power output shaft.
Owner:CHONGQING UNIV

Heating management system for hybrid vehicle

The invention discloses a heating management system for a hybrid vehicle. The heating management system comprises an engine heating large cycle and an electric heating small cycle. The engine heating large cycle is used for heating a water way, and the water way forms a circulating loop sequentially through an engine circulating water pump, a thermostat, an inlet B of a three-way valve, an outlet C of the three-way valve, a passing water PTC (positive temperature coefficient) heater and a cab heating unit; the electric heating small cycle is used for heating the water way; the water way forms another circulating loop sequentially through a PTC water pump, an inlet A of the three-way valve, the outlet C of the three-way valve, the passing water PTC heater and the cab heating unit. The heating management system has the advantages that in a hybrid mode (in which an engine runs), a passenger compartment is heated by high-temperature cooling water flowing out of the engine and passing the passing water PTC heater, the demand of passengers for heating is met, a defrosting function and a defogging function are achieved, energy consumption is lowered, all-electric mode driving range is widened, the whole hybrid vehicle is more economical, and the environmental friendliness of the hybrid vehicle is better embodied.
Owner:奇瑞新能源汽车股份有限公司

Electronic control mixing energy storage type electric automobile

The invention discloses an electronic control hybrid energy-storage electric automobile, which consists of a power supply detection device, a charge mode selection device, a drive controller temperature display device, a charge controller temperature display device, a motor rotating speed signal display device, a braking signal display device, an acceleration signal display device, a power generation system information feedback device, a charge system information feedback device, an environmental detection device, a steering wheel turn angle signal display device, an electronic comprehensive control system, a signal processing device, a controller, a charge control device, a drive control device, an automatic protection device, an instrument signal control device, a power generation unit, a power cell, a driving motor, an instrument display device and a fault display device, wherein the power generation unit, the power cell, the driving motor, the instrument display device and the fault display device are connected with and arranged behind the electronic comprehensive control system. The electric automobile has the advantages of simple whole structure, convenient operation and use, greatly reduced weight of the whole vehicle, energy saving technology for a circuit and well prolonged road haul.
Owner:黄向晖

Electric car heat pump air-conditioning system with adjustable refrigerant charging amount

The invention relates to an electric car heat pump air-conditioning system with an adjustable refrigerant charging amount, and belongs to the technical field of air-conditioning and cars. According to the electric car heat pump air-conditioning system, the rotary speeds of a compressor, an external heat exchanger fan and an internal heat exchanger fan can be adjusted at any time according to temperature signals of an external temperature sensor and an internal temperature sensor, therefore the system is enabled to be in an optimal working condition; a two-position three-way solenoid valve can be switched according to a pressure signal of an exhaust pressure sensor of the compressor to achieve storage and release of a refrigerant so as to achieve matching of refrigerant charging amounts in refrigerating and heating modes; a system condensing pressure is reduced in the refrigerating mode to achieve a pressure protection effect; and the system condensing pressure is increased in the heating mode to increase the system heating capacity and improve the heating efficiency of a heat pump air conditioner. Therefore, the energy consumption is reduced, the travel distance of an electric car is prolonged, and an application of the electric car is promoted.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Double-motor driving control method and device, controller and automobile

The invention provides a double-motor driving control method and device, a controller and an automobile, and relates to the technical field of motor driving control. The method comprises the steps that the current travelling speed and master driving torque needing to be output to an automobile body from motors are obtained; first output torque of the first motor and second output torque of the second motor are determined under the travelling conditions of the travelling speed and the master driving torque according to a torque reference table, wherein first output torque corresponding to the first motor and second output torque corresponding to the second motor under conditions of different travelling speeds and different master driving torque when thetotal electric power is the smallest are recorded in the torque reference table; and the output torque of the first motor and the output torque of the second motor are adjusted according to the first output torque and the second output torque which are determined. According to the scheme provided by the invention, the problem that the single-motor driving efficiency is low is solved, the double-motor comprehensive driving efficiency is always kept within an optimal range, and the comprehensive efficiency of a driving system is improved.
Owner:BEIJING ELECTRIC VEHICLE
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