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1569results 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

Vehicle energy control method and device of vehicle, vehicle and storage medium

The embodiments of the invention disclose a vehicle energy control method and device of a vehicle, the vehicle and a storage medium. The vehicle energy control method comprises the steps: the surpluselectric quantity of a power cell at the current moment is obtained, and according to the surplus electric quantity and the surplus electric quantity threshold, a first output power standby value of afuel cell engine is determined; based on a heat management power threshold value, the unit time output power and the minimum output power of the fuel cell engine, a second output power standby valueof the fuel cell engine is determined; according to the vehicle required power, the maximum discharge power of the power cell, the first output power standby value and the second output power standbyvalue, the target output power of the fuel cell engine at the current moment is determined; and based on the working state of the power cell, the vehicle required power, the target output power and the maximum working power of the power cell at the current moment, the target working power of the power cell at the current moment is determined. The vehicle energy utilization rate is increased, and the vehicle energy consumption rate is decreased.
Owner:CHINA FIRST AUTOMOBILE

Drive control method for range-extended electric vehicle

The invention relates to a drive control method for a range-extended electric vehicle. The method is characterized in that whether an engine is required to participate in working or not is determined according to the target mileage of a driver and the working condition average speed at a power consumption stage. When the target mileage is greater than a mileage threshold and the working condition average speed is greater than an average speed threshold, the engine is required to participate in working; otherwise, the vehicle runs in a pure electric mode all the time. When the engine is required to participate in working, the engine only works when the whole vehicle is required to enter an economic zone, and electrical energy is not actively supplied. At the power consumption stage, a gear is determined according to the driving capability and the working efficiency of a driving motor at the first and second gears. At a power maintaining stage, tandem operation is realized when a power system runs at a low speed, and parallel operation is realized when a power system runs at a high speed; and at the power maintaining stage, the working gear is determined according to the requirement of the engine in a high-efficiency zone. With the adoption of the method, efficient use of energy of the whole vehicle is realized, the driving mileage of the whole vehicle is improved, the running working condition adaptability of the whole vehicle is improved, and efficient work of the engine is realized.
Owner:CHINA FIRST AUTOMOBILE

Method and system for controlling dynamic gear and economical gear of pure electric automobile

The invention provides a method and a system for controlling a dynamic gear and an economical gear of a pure electric automobile. The system comprises an entire automobile controller, a gear shifter, an accelerator pedal, a brake pedal, a drive motor controller and a power battery controller, wherein the whole automobile controller is used for judging whether the automobile is in a dynamic running state, an economical running state, a driving state, a braking state or a sliding state according to a gear signal of the gear shifter, an opening signal of the accelerator pedal, an on-off signal of the brake pedal, an automobile speed signal and the like, and formulating a corresponding torque calculation strategy, as well as collecting a gear shifter fault signal, an accelerator pedal failure signal, a failure signal fed back by the drive motor controller, a fault signal fed back by the power battery controller and the like, performing fault diagnosis and finally sending target torque to control the power output of the automobile. By virtue of the gear shifting, the method and the system can be used for reducing the energy consumption rate of the system and improving the driving mileage of the whole automobile while meeting an automobile dynamic performance target.
Owner:深蓝汽车科技有限公司

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
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