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Intelligent power control method and device for electric vehicle

An intelligent power control, electric vehicle technology, applied in the field of electric vehicles, can solve the problems of reduced system efficiency, weak power, affecting vehicle mileage, etc.

Active Publication Date: 2019-05-14
TIANJIN AIMA VEHICLE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The prior art simply relies on increasing the power of the motor or simultaneously increasing the power of the motor and the controller to improve the problem of weak power. On the one hand, it will lead to a substantial increase in the hardware cost of the vehicle, seriously affecting the market price competitiveness of the manufacturer; on the other hand On the one hand, continuous high-power input during low-speed startup or acceleration will reduce system efficiency and significantly increase power consumption, affecting vehicle mileage

Method used

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  • Intelligent power control method and device for electric vehicle
  • Intelligent power control method and device for electric vehicle
  • Intelligent power control method and device for electric vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] figure 1 It is a flow chart of an electric vehicle intelligent power control method provided by Embodiment 1 of the present invention.

[0052] refer to figure 1 , the method includes the following steps:

[0053] Step S101, obtain the handlebar signal, and monitor the bus current I according to the handlebar signal;

[0054] Here, the electric vehicle receives the handlebar signal when it is powered on, and the controller drives the motor to run with the DC voltage of the battery through PWM modulation and an inverter circuit. The vehicle starts to accelerate from a stationary state, and the controller monitors the bus current I in real time.

[0055] Bus current monitoring process: the controller MCU calculates the controller bus current I by real-time detection of the voltage u across the sampling resistor Rs at the input terminal and according to Ohm's law I=u / r.

[0056]Step S102, if the bus current I is greater than or equal to the first preset current I1, moni...

Embodiment 2

[0077] image 3 It is a schematic diagram of an electric vehicle intelligent power control device provided in Embodiment 2 of the present invention.

[0078] refer to image 3 , the device includes an acquisition module 10 , a monitoring module 20 , a first judgment module 30 , a first adjustment module 40 , a second judgment module 50 , and a second adjustment module 60 .

[0079] An acquisition module 10, configured to acquire a handlebar signal, and monitor the bus current according to the handlebar signal;

[0080] A monitoring module 20, configured to monitor the current vehicle speed within a preset time when the bus current is greater than or equal to the first preset current;

[0081] The first judging module 30 is used to judge whether the current vehicle speed is less than the first preset vehicle speed;

[0082] The first adjustment module 40 is configured to adjust the bus current to a second preset current when the current vehicle speed is lower than the first ...

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Abstract

The invention provides an intelligent power control method and device for an electric vehicle. The intelligent power control method comprises the steps that a handle turning signal is obtained; a buscurrent is monitored according to the handle turning signal; if the bus current is greater than or equal to a first preset current, the current vehicle speed is monitored in the preset time; whether the current vehicle speed is less than a first preset vehicle speed or not is judged; if the current vehicle speed is less than the first preset vehicle speed, the bus current is adjusted to be a second preset current; whether the current vehicle speed is greater than a second preset vehicle speed or not is judged; and if the current vehicle speed is greater than the second preset vehicle speed, the bus current is adjusted to be a first preset current. According to the intelligent power control method and device for the electric vehicle, power output can be intelligently controlled under the situation of not increasing the whole vehicle cost, at the moment of heavy-load starting or travelling on the climbing road and needing power lifting, strong power can be output immediately; and when power lifting is not needed, traveling in the original state is kept, power consumption is small, the traveling mileage is prolonged, traveling is stable, and the user riding comfort degree is high.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to an intelligent power control method and device for electric vehicles. Background technique [0002] In recent years, electric bicycles have become an important means of transportation for people to travel short distances due to their economic benefits, convenient mobility, energy saving and environmental protection. However, electric vehicles currently on the market generally have the problems of weak climbing power and slow acceleration of heavy loads. [0003] The prior art simply relies on increasing the power of the motor or simultaneously increasing the power of the motor and the controller to improve the problem of weak power. On the one hand, it will lead to a substantial increase in the hardware cost of the vehicle and seriously affect the market price competitiveness of the manufacturer; on the other hand On the one hand, continuous high-power input during low...

Claims

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Application Information

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IPC IPC(8): B62M6/45B60L15/20
CPCY02T10/72
Inventor 成建亭韩桂宝朱泽琳陈龙驹秦宝林
Owner TIANJIN AIMA VEHICLE TECH CO LTD
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