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Vehicle optimal efficiency obtaining method and system

A technology of optimal efficiency and acquisition method, applied in vehicle components, vehicle condition input parameters, control devices, etc., can solve the problems of improving vehicle power optimization, unable to obtain optimal efficiency, etc., and achieve the effect of improving computing efficiency.

Active Publication Date: 2020-08-07
智车优行科技(上海)有限公司
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Problems solved by technology

[0006] A technical problem to be solved by the embodiments of the present invention is to provide a method and system for obtaining the optimal efficiency of a vehicle to solve the problem in the prior art that the optimal efficiency cannot be obtained and thus the power optimization required for the entire vehicle cannot be improved from the perspective of system efficiency

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  • Vehicle optimal efficiency obtaining method and system
  • Vehicle optimal efficiency obtaining method and system

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Embodiment Construction

[0067] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0068] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0069] Such as figure 1 As shown, it is a principle flow chart of the vehicle optimal efficiency acquisition method provided in this embodiment, wherein,

[0070] Step 11, establishing the force model of the whole vehicle.

[0071] Step 12: Sampling the speed of the vehicle to obtain feedback data; and obtaining the equivalent coefficient of driving resistance according to the force model of the vehicle.

[0072] Step 13: Determi...

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Abstract

The embodiment of the invention discloses a vehicle optimal efficiency obtaining method and system, and the method comprises the steps: building a whole vehicle stress model; sampling the vehicle speed of the whole vehicle to obtain feedback data, and obtaining driving resistance equivalent coefficients A, B and C according to the stress model of the whole vehicle; determining the required torqueof the whole vehicle according to the driving resistance equivalent coefficients A, B and C and the mass of the whole vehicle; screening the optimal torque output by the motor high-efficiency point bysetting a torque interval, and achieving the optimal efficiency of the whole vehicle. According to the scheme, the whole vehicle mathematical model is established, the whole vehicle stress equivalentcoefficient is used for closed-loop adjustment, and various working conditions in whole vehicle operation are met. And the calculation efficiency is improved by optimizing a calculation mode, lookingup a table, obtaining a difference value and a weight, calibrating in advance and the like.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to a method and system for obtaining optimum efficiency for vehicles. Background technique [0002] With the development of new energy technology, the power of new energy car manufacturers has grown stronger, and my country has been the largest country in the production and sales of new energy for three consecutive years. However, due to its new materials, new structure, new power and other characteristics, new energy vehicles will inevitably bring new problems and new challenges. For example, although the electric drive system has higher conversion efficiency than the traditional internal combustion engine, due to the slow development of battery technology at this stage, the phenomenon that the energy density of the battery system is far lower than that of fuel will still exist, and will even exist for a long time. Therefore, the mileage anxiety of electric vehicles is...

Claims

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Application Information

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IPC IPC(8): B60W40/105B60W40/13B60W40/00B60W10/08
CPCB60W10/08B60W40/00B60W40/105B60W40/13B60W2520/10B60W2530/10B60W2530/16B60W2710/083
Inventor 高瑒
Owner 智车优行科技(上海)有限公司
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