Electric vehicle with automatic wave function

Abstract

The invention relates to an electric vehicle with an automatic wave function. A single-chip microcomputer circuit with an automatic wave function program, a driving circuit, a Hall sensing signal input terminal, a negative electro-dynamic potential collecting and processing circuit, a speed regulation input terminal, a brake signal input terminal and a gear signal input terminal are arranged on an electronic circuit board of a controller of the electric vehicle; the single-chip microcomputer circuit with the automatic wave function program is used for detecting signals fed back or output through the above functional circuits to identify the difficulties during abrupt slope climbing, overload driving, accelerated starting or overtaking and the requirement of increasing the power under different speed conditions during pushing or driving, and a high-power gear is switched through an automatic wave; after abrupt slope climbing, overload unloading, accelerated starting or overtaking driving brake, an economic gear is switched through the automatic wave. When the circuit of the electric vehicle breaks down, a low speed gear is switched through the automatic wave for continuously safe driving; failure modes can be promoted through voice loudspeaker, so that failures are temporarily and automatically repaired, and the electric vehicle drives at a low speed.

Description

technical field [0001] The invention relates to the field of electric vehicles, including various lithium battery bicycles, lithium battery electric vehicles, lead-acid battery electric bicycles, lead-acid battery electric vehicles, other battery electric bicycles, other battery electric vehicles, simple electric vehicles, luxury electric vehicles, portable Various electric vehicles such as electric motorcycles, electric motorcycles, electric tricycles; more specifically, the improvement involves electric vehicles with automatic wave functions. Background technique [0002] At present, most of the electric vehicles on the market have speed or function gear switches. Generally, the speed gears are divided into three gears: low speed, medium speed, and high speed; Functional gears are divided into economy with small current limit value, overspeed and climbing gear with large current limit value; speed and function mixed gears are divided into low speed, high speed, overspeed w...

AI Technical Summary

Problems solved by technology

None of these electric vehicles can automatically switch functions or speed gears according to road conditions, vehicle conditions, and people's desires; if the current limit value is low, steep slopes cannot be climbed, and if the current limit value is high, the mileage will be shortened. It is always difficult to get a good solution; or the current limit value is low, the starting speed is slow, or it is difficult to drive with overload, the current limit value is high, and the mileage is shortened; long-term use of overspeed, that is, overtaking speed due to wind resistance and other factors will also cause The mileage is shortened, or the overtaking force is not enough when no power is added; etc.

For electric vehicles with climbing gears, the climbing gear has a fixed maximum current limit; when riding a steep slope, the gear switch must be adjusted to the climbing gear in advance, otherwise the car will stop halfway due to difficulty in climbing. When parking, the gear switch is adjusted to the climbing gear. Since the efficiency of the electric vehicle controller is very low in the low-speed stage of starting, that is, the output power is very low, which will make it impossible to continue climbing.

After using the climbing gear to climb the slope, you have to manually operate the gear switch to exit the climbing gear, and use the economical gear with a smaller current limit value to drive; while riding, such repeated operations are very troublesome and inconvenient. It is also often because the rider forgets to operate the gear switch in time to exit the climbing gear and seriously shorten the mileage

For electric vehicles with booster gears, it is necessary to operate the booster gear switch more frequently and in a timely manner before and after climbing, or accelerating, or overloading, or overtaking, which makes the rider feel very troublesome. Inconvenient, or when you forget to operate the booster gear switch to exit the booster gear, there is also the problem of severely shortened mileage

An invention patent No. 201210064331 is an electric vehicle automatic booster speed-up control method: the sampling current is greater than 13 amperes and lasts for 5 seconds, and the electric vehicle intelligent controller enters the booster speed-up process. In the state of booster acceleration, increase the climbing ability of the electric vehicle; this method of booster has serious defects: first, when the cart climbs a steep slope, as long as the sampling current is greater than 13 amps and lasts for 5 seconds, Regardless of whether the pusher feels that the cart is difficult to climb, or whether the speed has met the requirements of the pusher, it will automatically increase the speed when the pusher is unconscious, that is, it is very sudden, unexpected and blind, resulting in pushing The driver cannot react quickly to quickly follow up the slope or cannot immediately operate the handlebar to slow down, which may cause a speeding accident; second, when riding at a faster speed, or at a faster speed on a slightly sloped When riding on the road, when the current is greater than 13 amps and lasts for 5 seconds, it will automatically enter the afterburner acceleration process. It can be seen that this is only a 5-second delay, and the electric vehicle starts to increase from a small current limit value to The maximum current limit value, no matter whether the rider feels that the speed he is riding is satisfied, or whether it is difficult, or whether the rider thinks that he needs to increase power, there is a large blindness

A utility model patent No. 2010201900809 electric vehicle controller that can automatically shift gears: the feedback signal from the counter electromotive force detection circuit, the Hall sensor detection circuit, and the current detection circuit can determine which working mode the electric vehicle is in, which can increase The control performance of electric vehicles on uphill and bumpy roads; the current detection circuit is used to judge the load size, the Hall sensor detection circuit is used to judge the driving speed, and the back electromotive force detection circuit is used to judge the bumpy road shape. These judgments and processing The process has nothing to do with the desire of the rider. It cannot be like the automatic wave of a car, which changes the speed gear steplessly according to the strength and speed of the rider's accelerator pedal, that is, the desire of the rider. It cannot distinguish the different speed conditions of trolley climbing and cycling climbing. Whether it is difficult to climb downhill or whether it is necessary to start climbing, there are still certain suddenness, accidents and blindness, which may also lead to speeding accidents; when people ride on bumpy road conditions, including when passing speed bumps, they know What kind of speed is better to ride according to experience, people with different weights and different physical health conditions, or people who need to rush on the road, will turn the handlebar to adjust the riding speed more quickly according to different road conditions and feelings, so as to Meet the needs of different personalities in time; it can be seen that the function of automatic speed adjustment according to the bumpy road conditions of the electric vehicle of this utility model is unnecessary, and it will also make the rider feel that it is not easy to control the speed of the vehicle according to his own wishes

A utility model patent No. 2012202871234 intelligent electric bicycle drive system: it consists of a two-speed motor and a two-speed controller, the two-speed motor is composed of two sets of high and low speed coils with different speeds, and the two-speed controller adds Two high-speed and low-speed relay circuits are installed, and its structure is more complicated, which will greatly increase the cost and failure rate

A dual-power electric bicycle with a utility model patent application number of 2009200885067: mainly based on the electric bicycle plus a gasoline engine system, the structure is complex, the cost is high, and it is not environmentally friendly, so it is not very suitable for popularization and application

[0003] Therefore, the existing electric vehicle technology still needs to be improved and developed.

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