New energy automobile driving method

A technology of new energy vehicles and driving methods, which is applied in the direction of control drive, electric vehicles, and electric energy management. It can solve problems such as safety threats, cost considerations, or difficulty in vehicle integration, so as to reduce untimely control and avoid the risk of steering loss. , to avoid the effect of slipping

Pending Publication Date: 2020-09-11
UNITED AUTOMOTIVE ELECTRONICS SYST
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Problems solved by technology

The current situation that contradicts this is that due to cost considerations or difficulties in vehicle integration, in addition to the anti-lock braking system ABS (Anti-lock Braking System) required by regulations, in terms of active safety, the existing technology has no Drive anti-skid and other functions related to the stability of the vehicle operation seem powerless
Some low-cost new energy vehicles are not equipped with ESP, the lack of passive safety components poses a great threat to the safety of vehicles on extreme roads such as ice, snow, sand and gravel

Method used

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Embodiment Construction

[0027] The purpose of the present invention is to calculate the driving state of the current vehicle in real time according to the slip ratio calculation formula obtained by the wheel speed sensor in real time of the driving wheels and non-driving wheels. When the wheel speed is low, it can be considered that the driving wheel and the road are slipping, that is, the driving force cannot fully act on the road. When this phenomenon occurs, the slip ratio can be optimized by reducing the torque of the drive wheel to achieve the purpose of fully utilizing the road surface adhesion.

[0028] In order to realize the above idea, the present invention provides a new energy vehicle driving method, the new energy vehicle includes a vehicle controller, and the new energy vehicle driving method includes the following steps:

[0029] S1: Compare the first required torque transmitted by the vehicle controller with a set torque threshold, and when the first required torque is greater than a ...

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Abstract

The invention provides a new energy automobile driving method. A mode of adjusting motor driving torque is adopted, after the slip rate exceeds an optimal slip rate control interval, a classic PI control mode is adopted, the slip rate is made to return to the optimal slip rate control range, and when the slip rate is located in the optimal interval, the required torque of a whole automobile, namely an accelerator pedal of a driver, is directly output. The real-time, continuous and automatic adjustment of the slip rate is realized; compared with a traditional ESP (Electronic Stability Program)system, under the condition that the hardware cost is not increased, starting and driving torque output of the whole automobile on a wet and slippery road surface can be improved, the adjusting precision is improved, abrasion of a brake pad is reduced, and automobile torque fluctuation and automobile body shaking caused when the driving anti-skid function plays a role are further avoided.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to a driving method for new energy vehicles. Background technique [0002] In recent years, with the gradual revitalization of the new energy market and the rapid development of new energy vehicles, consumers' demand for pure new energy vehicles has gradually expanded from the initial driving journey to a higher level of driving stability, driving safety, etc. aspect. The current situation that contradicts this is that due to cost considerations or difficulties in vehicle integration, in addition to the anti-lock braking system ABS (Anti-lock Braking System) required by regulations, in terms of active safety, the existing technology has no The functions related to the stability of vehicle operation, such as driving anti-skid, seem powerless. Some low-cost new energy vehicles are not equipped with electronic stability system (ESP), and the lack of passive safety compone...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20
CPCB60L15/20B60L2240/423Y02T10/72
Inventor 王宇鲍明凯孙可
Owner UNITED AUTOMOTIVE ELECTRONICS SYST
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