Calculation method and system for remainder range of electric automobile

Abstract

The invention discloses a calculation method and system for the remainder range of an electric automobile. The calculation method includes the following steps that (1) a battery management system (BMS) reads the numerical value of an odometer of the automobile and obtains a running distance S within a certain period; (2) the current in the period is detected, and the power consumption amount Q in the period is calculated; (3) the ratio of the read running distance S to the detected and worked-out power consumption amount Q serves as the energy consumption value K per kilometer; and (4), the BMS obtains the current SOC value, and the remainder range is calculated according to the energy consumption value K per kilometer. The calculation system comprises a data reading module, a detection module, an energy consumption value calculation module and a remainder range calculation module which are sequentially connected. According to the calculation method and system for the remainder range of the electric automobile, the running distance and the power consumption amount in the certain period are obtained by reading the odometer of the automobile, the energy consumption value K per kilometer is obtained through the ratio of the corresponding distance to the power consumption amount, and therefore a user can visually, accurately and conveniently know the remainder range of the electric automobile in real time.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, and more specifically, relates to a calculation method and a calculation system for the remaining mileage of an electric vehicle. Background technique [0002] In the field of electric vehicles, the essence of users' concern about the remaining power is the remaining mileage of the car. Electric vehicle users need to know the mileage of the car intuitively and accurately, so that they can make driving plans and judge when to use the car. to charge. The remaining mileage calculation method in the prior art is: a). Detect and identify the real-time driving mode of the electric vehicle; b). According to the pre-acquired driving mode and the energy consumption meter per kilometer under the working condition, obtain the real-time driving mode. Energy consumption per kilometer; c). Obtain the current battery SOC, and obtain the remaining mileage according to the current battery SOC and the e...

AI Technical Summary

Problems solved by technology

The remaining mileage calculation method in the prior art is: a). Detect and identify the real-time driving mode of the electric vehicle; b). According to the pre-acquired driving mode and the energy consumption meter per kilometer under the working condition, obtain the real-time driving mode. Energy consumption per kilometer; c). Obtain the current battery SOC, and obtain the remaining mileage according to the current battery SOC and the energy consumption per kilometer in real-time driving mode; although the above technical solution can also calculate the remaining mileage, this method still cannot satisfy users Requirements for real-time and accurate calculation of remaining mileage

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