All-electric vehicle recycled energy management method and system

Abstract

The invention discloses an all-electric vehicle recycled energy management method and system; the method comprises detecting temperature of a battery, using the battery temperature, power level of thebattery and a residual electricity conversion power value as input signals, comparatively judging the input signals, preset battery temperature upper limit and lower limit and a preset battery powerlevel threshold, and controlling a flow direction of electricity converted from recycled braking energy. The system comprises a motor module, a power module, a detection module, a control module, an executive circuit module, a power consumption module and a heating-cooling module. The all-electric vehicle recycled energy management method and system are specific to recycled energy management for an all-electric vehicle during adaptive sliding on a long and steep slope, it is ensured that the power level of a battery is maintained in a suitable range, and the all-electric vehicle can apply theresidual recycled braking energy to vehicular power-consuming devices at the premise of having good braking performance.

Description

technical field [0001] The invention belongs to the technical field of energy management of pure electric vehicles, in particular to a method and a management system for recovering energy of pure electric vehicles, and is suitable for the management of recovered energy of pure electric vehicles in the process of self-adaptive gliding downhill when growing up. Background technique [0002] The power source of pure electric vehicles all comes from batteries. Since there is no engine in traditional vehicles, pure electric vehicles cannot use the method of anti-drag engine in traditional vehicles for braking. Although pure electric vehicles can use the traditional hydraulic braking system to achieve braking, the torque control accuracy of hydraulic braking is low and the response speed is slow, and the long-term and high-power use of the hydraulic braking system will cause thermal degradation of the brakes Phenomenon, thereby affecting the braking safety of the vehicle. Therefo...

AI Technical Summary

Problems solved by technology

In addition, most of the existing battery thermal management technologies are aimed at the battery in the normal state, and there is a lack of a battery thermal management solution for the braking energy recovery state.

[0006] In addition, in a low temperature environment, the charging capacity of the battery is limited, which will also affect the braking performance of pure electric vehicles

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